C# ListView.Clear方法代码示例

        //────────────────────────────────────────
        /// <summary>
        /// リスト・ビュー1の内容を、リスト・ビュー2へ、コピーします。
        /// </summary>
        /// <param name="listView"></param>
        /// <param name="listView"></param>
        public void CopyTo(ListView listView1, ListView listView2, Log_Reports log_Reports)
        {
            // リスト・ビュー2を空にします。
            listView2.Clear();

            // 編集テーブルを、並び順変更先テーブルにコピーします。
            foreach (ColumnHeader columnHeader in listView1.Columns)
            {
                listView2.Columns.Add(columnHeader.Text);
            }

            foreach (ListViewItem listViewItem in listView1.Items)
            {
                // [0]列目を初期値として設定します。
                ListViewItem newItem = new ListViewItem(listViewItem.Text);

                // 最初の[0]列目は既に追加済みなので、[1]列目以降から追加します。
                for (int nIndex = 1; nIndex < listViewItem.SubItems.Count; nIndex++)
                {
                    newItem.SubItems.Add(listViewItem.SubItems[nIndex]);
                }
                listView2.Items.Add(newItem);
            }

            goto gt_EndMethod;
            //
            gt_EndMethod:
            ;
        }

 public void InitialListView(ListView listView)
 {
     listView.Clear();
     InsertAllColumns(listView);
     listView.BeginUpdate();
     AddFlowItem(listView);
     listView.EndUpdate();
 }

        public void RefreshUpdate(ListView listview, TabPage tab)
        {
            getpack = new GetPackage(packages);
            IEnumerable<IPackage> localPackages = getpack.GetPackagesFromExtensions(App.Extensions);
            if (localPackages.Count() > 0)
            {
                IEnumerable<IPackage> list = null;
                try
                {
                    list = packages.Repo.GetUpdates(localPackages, false, false);
                }
                catch (WebException)
                {
                    listview.Invoke((Action)(() =>
                        {
                            listview.Clear();
                            listview.Items.Add("Updates could not be retrieved for the selected feed.");
                            listview.Items.Add("Try again later or change the feed.");
                        }));
                }

                listview.Invoke((Action)(() =>
                {
                    listview.Clear();
                    int Count = list.Count();
                    tab.Text = String.Format("Updates ({0})", Count);
                    Add.AddPackages(list, listview, 0);
                    if (listview.Items.Count == 0)
                    {
                        listview.Clear();
                        listview.Items.Add("No updates available for the selected feed.");
                    }
                }));
            }
            else
            {
                listview.Invoke((Action)(() =>
                {
                    listview.Clear();
                    listview.Items.Add("No packages are installed.");
                }));
            }
        }

 public static void FillListView(ListView _listView, List<IBaseElement> _listEl)
 {
     _listView.Clear();
     _listView.BeginUpdate();
     foreach (IBaseElement row in _listEl)
     {
         var item = new ListViewItem(row.name);
         _listView.Items.Add(item);
     }
     _listView.EndUpdate();
 }

 public void updateOnlineUserList(ListView onlineUserList)
 {
     if (onlineUserList.InvokeRequired)
     {
         // We're on a thread other than the GUI thread
         onlineUserList.Invoke(new MethodInvoker(() => updateOnlineUserList(onlineUserList)));
         return;
     }
     onlineUserList.Clear();
     foreach (var user in Main.ludo.Users)
     {
         onlineUserList.Items.Add(user.UserName);
     }
     onlineUserList.Items[ClientBase.myUserListIndex].BackColor = System.Drawing.Color.Gold; // Set this user background color
 }

        public void createListView(ListView listView, String responseDate, String responseString)
        {
            // Add the group, using the date for the response data as the group name.
            ListViewGroup responseDateGroup = new ListViewGroup (responseDate);
            listView.Groups.Add (responseDateGroup);

            // This ensures that each entry is put on a separate line.
            listView.AutoResizeColumns (ColumnHeaderAutoResizeStyle.ColumnContent);

            // Without clearing the listview first, duplicate elements will appear.
            if (listView.Groups.Count == 1)
            {
                listView.Clear ();
            }

            // Display each response on a separate line.
            ListViewItem responseStringItem;
            String[] responses = responseString.Split ('\n');
            foreach (string word in responses)
            {
                responseStringItem = new ListViewItem (word, responseDateGroup);
                listView.Items.Add (responseStringItem);
            }
        }

        public static void BindResultSet(ResultSet resultSet, ListView listView) {
            listView.BeginUpdate();
            try {
                listView.Clear();

                listView.Columns.Add("No");

                foreach(var name in resultSet.FieldNames)
                    listView.Columns.Add(name);

                var i = 0;
                foreach(var row in resultSet) {
                    var item = new ListViewItem(i.ToString());
                    foreach(var name in resultSet.FieldNames)
                        item.SubItems.Add(row[name].AsText());

                    listView.Items.Add(item);
                    i++;
                }
            }
            finally {
                listView.EndUpdate();
            }
        }

        /// <summary>
        /// Fill Database status to ListView
        /// </summary>
        /// <param name="lstSvr"></param>
        public static void FillDataBaseStatusToList(ListView lstSvr)
        {
            lstSvr.Clear();
            if (SystemManager.IsUseDefaultLanguage())
            {
                lstSvr.Columns.Add("DataBaseName");
                lstSvr.Columns.Add("CollectionCount");
                lstSvr.Columns.Add("DataSize");
                lstSvr.Columns.Add("FileSize");
                lstSvr.Columns.Add("IndexCount");
                lstSvr.Columns.Add("IndexSize");
                lstSvr.Columns.Add("ObjectCount");
                lstSvr.Columns.Add("StorageSize");
            }
            else
            {
                lstSvr.Columns.Add(SystemManager.mStringResource.GetText(StringResource.TextType.DataBase_Status_DataBaseName));
                lstSvr.Columns.Add(SystemManager.mStringResource.GetText(StringResource.TextType.DataBase_Status_CollectionCount));
                lstSvr.Columns.Add(SystemManager.mStringResource.GetText(StringResource.TextType.DataBase_Status_DataSize));
                lstSvr.Columns.Add(SystemManager.mStringResource.GetText(StringResource.TextType.DataBase_Status_FileSize));
                lstSvr.Columns.Add(SystemManager.mStringResource.GetText(StringResource.TextType.DataBase_Status_IndexCount));
                lstSvr.Columns.Add(SystemManager.mStringResource.GetText(StringResource.TextType.DataBase_Status_IndexSize));
                lstSvr.Columns.Add(SystemManager.mStringResource.GetText(StringResource.TextType.DataBase_Status_ObjectCount));
                lstSvr.Columns.Add(SystemManager.mStringResource.GetText(StringResource.TextType.DataBase_Status_StorageSize));

            }
            foreach (String mongoSvrKey in _mongoConnSvrLst.Keys)
            {
                try
                {
                    MongoServer mongoSvr = _mongoConnSvrLst[mongoSvrKey];
                    //感谢 魏琼东 的Bug信息,一些命令必须以Admin执行
                    if (!SystemManager.GetCurrentServerConfig(mongoSvrKey).Health ||
                        !SystemManager.GetCurrentServerConfig(mongoSvrKey).LoginAsAdmin) { continue; }
                    List<String> databaseNameList = mongoSvr.GetDatabaseNames().ToList<String>();
                    foreach (String strDBName in databaseNameList)
                    {
                        MongoDatabase mongoDB = mongoSvr.GetDatabase(strDBName);
                        DatabaseStatsResult dbStatus = mongoDB.GetStats();
                        ListViewItem lst = new ListViewItem(mongoSvrKey + "." + strDBName);
                        try
                        {
                            lst.SubItems.Add(dbStatus.CollectionCount.ToString());
                        }
                        catch (Exception)
                        {
                            lst.SubItems.Add("0");
                        }
                        lst.SubItems.Add(GetSize(dbStatus.DataSize));
                        lst.SubItems.Add(GetSize(dbStatus.FileSize));
                        lst.SubItems.Add(dbStatus.IndexCount.ToString());
                        lst.SubItems.Add(GetSize(dbStatus.IndexSize));
                        lst.SubItems.Add(dbStatus.ObjectCount.ToString());
                        lst.SubItems.Add(GetSize(dbStatus.StorageSize));
                        lstSvr.Items.Add(lst);
                    }

                }
                catch (Exception ex)
                {
                    throw ex;
                }
            }
        }

        private void UpdateFriendListView(ListView listview ,List<InboxUser> user, bool showNewMessage = false)
        {
            try
            {
                listview.Clear();
                ImageList il = new ImageList();
                il.TransparentColor = Color.Blue;
                il.ColorDepth = ColorDepth.Depth32Bit;
                il.ImageSize = new Size(50, 50);
                for (int i = 0; i < user.Count; i++)
                {
                    il.Images.Add(Image.FromFile(user[i].ProfilePath));
                    il.Images.SetKeyName(i, user[i].UserName);
                }
                listview.View = View.LargeIcon;
                //listview.LargeImageList = il;
                listview.Invoke(new Action(()=>listview.LargeImageList = il));
                for (int j = 0; j < user.Count; j++)
                {
                    ListViewItem item = new ListViewItem();
                    if (showNewMessage)
                    {
                        item.Text = GetInboxText(il.Images.Keys[j].ToString(), user[j].CountNew);
                        UpdateNewMessageLabel(null, lbReceiverNewMessage, user[j]);
                    }
                    else
                    {
                        item.Text = il.Images.Keys[j].ToString();
                    }

                    item.Name = user[j].UserID;
                    item.ImageIndex = j;
                   // listview.Items.Add(item);
                    listview.Invoke(new Action(()=>listview.Items.Add(item)));

                }
            }
            catch (Exception e)
            {
                Form1.Log(e);
            }
        }

        /// <summary>
        /// 将服务器状态放入ListView
        /// </summary>
        /// <param name="lstSvr"></param>
        public static void FillSrvStatusToList(ListView lstSvr)
        {
            lstSvr.Clear();
            lstSvr.Columns.Add("名称");
            lstSvr.Columns.Add("数据集数量");
            lstSvr.Columns.Add("数据大小");
            lstSvr.Columns.Add("文件大小");
            lstSvr.Columns.Add("索引数量");
            lstSvr.Columns.Add("索引数量大小");
            lstSvr.Columns.Add("对象数量");
            lstSvr.Columns.Add("占用大小");
            foreach (String mongoSvrKey in _mongoSrvLst.Keys)
            {
                try
                {
                    MongoServer mongoSvr = _mongoSrvLst[mongoSvrKey];
                    List<string> databaseNameList = mongoSvr.GetDatabaseNames().ToList<string>();
                    foreach (String strDBName in databaseNameList)
                    {
                        MongoDatabase mongoDB = mongoSvr.GetDatabase(strDBName);
                        DatabaseStatsResult dbStatus = mongoDB.GetStats();
                        ListViewItem lst = new ListViewItem(mongoSvrKey + "." + strDBName);
                        try
                        {
                            lst.SubItems.Add(dbStatus.CollectionCount.ToString());

                        }
                        catch (Exception)
                        {

                            lst.SubItems.Add(string.Empty);
                        }

                        lst.SubItems.Add(GetSize(dbStatus.DataSize));
                        lst.SubItems.Add(GetSize(dbStatus.FileSize));
                        lst.SubItems.Add(dbStatus.IndexCount.ToString());
                        lst.SubItems.Add(GetSize(dbStatus.IndexSize));
                        lst.SubItems.Add(dbStatus.ObjectCount.ToString());
                        lst.SubItems.Add(GetSize(dbStatus.StorageSize));
                        lstSvr.Items.Add(lst);
                    }

                }
                catch (Exception)
                {
                    //throw;
                }
            }
        }

        /// <summary>
        /// 将DB状态放入ListView
        /// </summary>
        /// <param name="lstData"></param>
        public static void FillDBStatusToList(ListView lstData)
        {
            lstData.Clear();
            lstData.Columns.Add("名称");
            lstData.Columns.Add("文档数量");
            lstData.Columns.Add("实际大小");
            lstData.Columns.Add("占用大小");
            lstData.Columns.Add("索引");
            lstData.Columns.Add("平均对象大小");
            lstData.Columns.Add("填充因子");
            foreach (String mongoSvrKey in _mongoSrvLst.Keys)
            {
                try
                {
                    MongoServer mongoSvr = _mongoSrvLst[mongoSvrKey];
                    List<string> databaseNameList = mongoSvr.GetDatabaseNames().ToList<string>();
                    foreach (string strDBName in databaseNameList)
                    {
                        MongoDatabase mongoDB = mongoSvr.GetDatabase(strDBName);

                        List<string> colNameList = mongoDB.GetCollectionNames().ToList<string>();
                        foreach (string strColName in colNameList)
                        {

                            CollectionStatsResult dbStatus = mongoDB.GetCollection(strColName).GetStats();
                            ListViewItem lst = new ListViewItem(strDBName + "." + strColName);
                            lst.SubItems.Add(dbStatus.ObjectCount.ToString());
                            lst.SubItems.Add(GetSize(dbStatus.DataSize));
                            lst.SubItems.Add(GetSize(dbStatus.StorageSize));
                            lst.SubItems.Add(GetSize(dbStatus.TotalIndexSize));
                            try
                            {
                                //在某些条件下，这个值会抛出异常，IndexKeyNotFound
                                lst.SubItems.Add(GetSize((long)dbStatus.AverageObjectSize));
                            }
                            catch (Exception)
                            {
                                lst.SubItems.Add("-");
                            }
                            try
                            {
                                //在某些条件下，这个值会抛出异常，IndexKeyNotFound
                                lst.SubItems.Add(dbStatus.PaddingFactor.ToString());
                            }
                            catch (Exception)
                            {
                                lst.SubItems.Add("-");
                            }
                            lstData.Items.Add(lst);
                        }
                    }
                }
                catch (Exception)
                {
                    //throw;
                }
            }
        }

 /// <summary>
 /// 用户列表
 /// </summary>
 /// <param name="dataList"></param>
 /// <param name="lstData"></param>
 private static void SetUserListToListView(List<BsonDocument> dataList, ListView lstData)
 {
     lstData.Clear();
     lstData.Columns.Add("ID");
     lstData.Columns.Add("用户名");
     lstData.Columns.Add("是否只读");
     //密码是密文表示的，这里没有安全隐患
     lstData.Columns.Add("密码");
     foreach (BsonDocument docFile in dataList)
     {
         ListViewItem lstItem = new ListViewItem();
         lstItem.Text = docFile.GetValue("_id").ToString();
         lstItem.SubItems.Add(docFile.GetValue("user").ToString());
         lstItem.SubItems.Add(docFile.GetValue("readOnly").ToString());
         lstItem.SubItems.Add(docFile.GetValue("pwd").ToString());
         lstData.Items.Add(lstItem);
     }
 }

 /// <summary>
 /// 用户列表
 /// </summary>
 /// <param name="dataList"></param>
 /// <param name="lstData"></param>
 private static void SetUserListToListView(List<BsonDocument> dataList, ListView lstData)
 {
     //2.4以后的用户，没有ReadOnly属性，取而代之的是roles属性
     //这里为了向前兼容暂时保持ReadOnle属性
     //Ref:http://docs.mongodb.org/manual/reference/method/db.addUser/
     lstData.Clear();
     if (!SystemManager.IsUseDefaultLanguage)
     {
         lstData.Columns.Add("ID");
         lstData.Columns.Add(SystemManager.mStringResource.GetText(StringResource.TextType.Common_Username));
         lstData.Columns.Add(SystemManager.mStringResource.GetText(StringResource.TextType.Common_Roles));
         lstData.Columns.Add(SystemManager.mStringResource.GetText(StringResource.TextType.Common_Password));
         lstData.Columns.Add("userSource");
         lstData.Columns.Add("otherDBRoles");
         lstData.Columns.Add(SystemManager.mStringResource.GetText(StringResource.TextType.Common_ReadOnly));
     }
     else
     {
         lstData.Columns.Add("ID");
         lstData.Columns.Add("user");
         lstData.Columns.Add("roles");
         lstData.Columns.Add("password");
         lstData.Columns.Add("userSource");
         lstData.Columns.Add("otherDBRoles");
         lstData.Columns.Add("readonly");
     }
     foreach (BsonDocument docFile in dataList)
     {
         ListViewItem lstItem = new ListViewItem();
         //ID
         lstItem.Text = docFile.GetValue(KEY_ID).ToString();
         //User
         lstItem.SubItems.Add(docFile.GetValue("user").ToString());
         //roles
         BsonValue strRoles;
         docFile.TryGetValue("roles", out strRoles);
         if (strRoles == null)
         {
             lstItem.SubItems.Add("N/A");
         }
         else
         {
             lstItem.SubItems.Add(strRoles.ToString());
         }
         //密码是Hash表示的，这里没有安全隐患
         //Password和userSource不能同时设置，所以password也可能不存在
         BsonValue strPassword;
         docFile.TryGetValue("pwd", out strPassword);
         if (strPassword == null)
         {
             lstItem.SubItems.Add("N/A");
         }
         else
         {
             lstItem.SubItems.Add(strPassword.ToString());
         }
         //userSource
         BsonValue strUserSource;
         docFile.TryGetValue("userSource", out strUserSource);
         if (strUserSource == null)
         {
             lstItem.SubItems.Add("N/A");
         }
         else
         {
             lstItem.SubItems.Add(strUserSource.ToString());
         }
         //OtherDBRoles
         BsonValue strOtherDBRoles;
         docFile.TryGetValue("otherDBRoles", out strOtherDBRoles);
         if (strOtherDBRoles == null)
         {
             lstItem.SubItems.Add("N/A");
         }
         else
         {
             lstItem.SubItems.Add(strOtherDBRoles.ToString());
         }
         //ReadOnly
         //20130802 roles列表示。ReadOnly可能不存在！
         BsonValue strReadOnly;
         docFile.TryGetValue("readOnly", out strReadOnly);
         if (strReadOnly == null)
         {
             lstItem.SubItems.Add("N/A");
         }
         else
         {
             lstItem.SubItems.Add(strReadOnly.ToString());
         }
         lstData.Items.Add(lstItem);
     }
     lstData.AutoResizeColumns(ColumnHeaderAutoResizeStyle.ColumnContent);
 }

        public void ShowJsonItemData(ListView listView)
        {
            listView.Clear();

            BuildJsonItemDataList(listView, m_JsonCollection);
        }

        private int fillCollumn(ListView.ListViewItemCollection items, string tableName,bool type)
        {
            bool flag = true;
            int counter = 0;
            if (type)
                items.Clear();

            List<object[]> fstDBNERows = new List<object[]> { };
            List<object[]> sndDBNERows = new List<object[]> { };
            List<ListViewItem> tItems = new List<ListViewItem> { };
            List<int> sI= new List<int> { };

            if (!flags.ContainsKey(tableName))
                flags.Add(tableName, new List<int> { });

            if (type)
                if (sTableChange)
                {
                    if (selectedTableIndex != null)
                        clearColumnsCheckers();
                    createColumnsCheckers(tableName);
                    selectedTableIndex = comboBox1.SelectedText;
                }

            if (type)
                sI = flags[tableName];

            SQLiteConnection fstDBConnection = new SQLiteConnection("Data Source=" + fstFilePath.Text + ";" + "FailIfMissing=True;Read Only=True;");
            fstDBConnection.Open();
            SQLiteCommand read = new SQLiteCommand("SELECT * FROM " + tableName);
            read.Connection = fstDBConnection;
            SQLiteDataReader fstDBReader = read.ExecuteReader();

            SQLiteConnection sndDBConnection = new SQLiteConnection("Data Source=" + sndFilePath.Text + ";" + "FailIfMissing=True;Read Only=True;");
            sndDBConnection.Open();
            SQLiteCommand sndRead = new SQLiteCommand("SELECT * FROM " + tableName);
            sndRead.Connection = sndDBConnection;
            SQLiteDataReader sndDBReader = sndRead.ExecuteReader();

            while (sndDBReader.Read())
            {
                object[] tmp = new object[sndDBReader.FieldCount];
                for (int i = 0; i < tmp.Length; i++)
                    if (!sndDBReader.IsDBNull(i))
                        if (sndDBReader.GetFieldType(i) != typeof(DateTime))
                            tmp[i] = sndDBReader.GetValue(i);
                        else
                        {
                            tmp[i] = sndDBReader.GetString(i);
                        }
                    else
                        tmp[i] = "null";

                sndDBNERows.Add(tmp);
            }

            while (fstDBReader.Read())
            {
                object[] row = new object[fstDBReader.FieldCount];
                for (int i = 0; i < row.Length; i++)
                    if (!fstDBReader.IsDBNull(i))
                        if (fstDBReader.GetFieldType(i) != typeof(DateTime))
                            row[i] = fstDBReader.GetValue(i);
                        else
                        {
                            row[i] = fstDBReader.GetString(i);
                        }
                    else
                        row[i] = "null";

                if (!addEqRowInList(row, sndDBNERows, tItems, sI, type))
                   fstDBNERows.Add(row);

            }
            for (int i = 0; i < sndDBNERows.Count;i++ )
                if (addEqRowInList(sndDBNERows[i], fstDBNERows, tItems, sI, type))
                    sndDBNERows.RemoveAt(i);

            while (fstDBNERows.Count != 0 && sndDBNERows.Count != 0)
            {
                if (fstDBNERows.Count == 0)
                {
                    foreach (object[] row in sndDBNERows)
                        if (type)
                            addRow2List(null, row, tItems, 1, sI, null);
                    sndDBNERows.Clear();
                    counter += sndDBNERows.Count;
                }
                else if (sndDBNERows.Count == 0)
                {
                    foreach (object[] row in fstDBNERows)
                        if (type)
                            addRow2List(row, null, tItems, 1, sI, null);
                    fstDBNERows.Clear();
                    counter += fstDBNERows.Count;
                }
                else
                    for (int i = 0; i < fstDBNERows.Count; i++)
                    {
                        List<int> count = new List<int> { };
//.........这里部分代码省略.........