本文整理汇总了C#中System.Data.DataSet.HasChanges方法的典型用法代码示例。如果您正苦于以下问题：C# DataSet.HasChanges方法的具体用法？C# DataSet.HasChanges怎么用？C# DataSet.HasChanges使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类System.Data.DataSet的用法示例。
在下文中一共展示了DataSet.HasChanges方法的15个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: run
//Activate This Construntor to log All To Standard output
//public TestClass():base(true){}
//Activate this constructor to log Failures to a log file
//public TestClass(System.IO.TextWriter tw):base(tw, false){}
//Activate this constructor to log All to a log file
//public TestClass(System.IO.TextWriter tw):base(tw, true){}
//BY DEFAULT LOGGING IS DONE TO THE STANDARD OUTPUT ONLY FOR FAILURES
public void run()
{
Exception exp = null;
DataSet ds = new DataSet();
ds.Tables.Add(GHTUtils.DataProvider.CreateParentDataTable());
try
{
BeginCase("HasChanges 1");
Compare(ds.HasChanges(),false );
}
catch(Exception ex) {exp = ex;}
finally {EndCase(exp); exp = null;}
DataRow dr = ds.Tables[0].NewRow();
dr[0] = 9;
ds.Tables[0].Rows.Add(dr);
try
{
BeginCase("HasChanges 2");
Compare(ds.HasChanges(),true );
}
catch(Exception ex) {exp = ex;}
finally {EndCase(exp); exp = null;}
}示例2: CounterForm
public CounterForm()
{
InitializeComponent();
LoginForm form = new LoginForm();
toolStripStatusLabel_UserName.Text = form.GetUserName();
toolStripStatusLabel_UserType.Text = form.GetUserType();
toolStripStatusLabel_Date.Text = DateTime.Today.ToLongDateString();
ds = new DataSet();
rentDAL = new Renting_Management_System.DAL.RentDAL();
ds = rentDAL.GetAll();
bindingSource = new BindingSource();
bindingSource.DataSource = ds;
bindingSource.DataMember = ds.Tables[0].TableName;
bindingSource.Sort = ds.Tables[0].Columns[0].ColumnName + " ASC";
dataGridView1.DataSource = bindingSource;
bindingNavigator1.BindingSource = bindingSource;
dataGridView1.Columns[0].ReadOnly = true;
dataGridView1.Columns[1].ReadOnly = true;
dataGridView1.Columns[2].ReadOnly = true;
bindingNavigatorAddNewItem.Enabled = false;
bindingNavigatorDeleteItem.Enabled = false;
if (ds.HasChanges())
{
toolStripButton_Save.Enabled = true;
changed = true;
}
}示例3: fatch2
void fatch2()
{
DataSet ds = new DataSet();
ds.ReadXml(s + "\\visible.xml");
if (ds != null && ds.HasChanges())
{
for (int i = 0; i < ds.Tables[0].Rows.Count; i++)
{
listBox1.Items.Add(ds.Tables[0].Rows[i][0].ToString());
}
}
}示例4: Get_Xml
void Get_Xml()
{
DataSet ds = new DataSet();
ds.ReadXml(Server.MapPath("~/Quotes.xml"));
if (ds != null && ds.HasChanges())
{
XmlGridView.DataSource = ds;
XmlGridView.DataBind();
}
else
{
XmlGridView.DataBind();
}
}示例5: UpdateDataSet
private void UpdateDataSet(DataSet dataSet)
{
if (!dataSet.HasChanges(DataRowState.Modified))
{
return;
}
DataSet tempDataSet = dataSet.GetChanges(DataRowState.Modified);
if (tempDataSet.HasErrors)
{
MessageBox.Show("Data has Errors");
}
else
{
tableAdapterManager.UpdateAll(tempDataSet);
}
}示例6: datagrFATCH
void datagrFATCH()
{
string b="";
DataSet ds = new DataSet();
ds.ReadXml(s + "\\visible.xml");
if (ds != null && ds.HasChanges())
{
for (int i = 0; i < ds.Tables[0].Rows.Count; i++)
{
b = ds.Tables[0].Rows[i][0].ToString();
// comboBox1.Items.Add(ds.Tables[0].Rows[i][0].ToString());
// dataGridView1.Columns.Add(ds.Tables[0].Rows[i][0].ToString());
dataGridView1.Columns.Add("h", b.ToString());
dataGridView1.Rows.Add("f");
}
}
}示例7: OnBeforeApplyUpdates
protected void OnBeforeApplyUpdates(EventArgs value)
{
EventHandler handler = (EventHandler)base.Events[EventOnBeforeApplyUpdates];
if (handler != null)
{
handler(this, value);
}
DataTable mergeTab = new DataTable();
DataSet mergedataset = new DataSet();
DataSet ds = new DataSet();
if (this.Container != null)
{
int i = this.Container.Components.Count;
for (int j = 0; j < i; j++)
{
if (this.Container.Components[j] is InfoBindingSource)
{
InfoBindingSource bs = (InfoBindingSource)this.Container.Components[j];
int m = bs.Relations.Count;
for (int n = 0; n < m; n++)
{
InfoRelation infoRel = bs.Relations[n];
ds = this.fRealDataSet;
if (infoRel.RelationDataSet.GetRealDataSet() == ds)
{
if (ds.HasChanges())
{
string strTabName = this.RemoteName.Substring(this.RemoteName.IndexOf('.') + 1);
mergeTab = ds.GetChanges().Tables[strTabName];
mergedataset = ds.GetChanges();
if (((InfoDataSet)bs.GetDataSource()).RealDataSet.Tables[0].Rows.Count == 0)
{
bs.Set_fEmptyViewMerge();
}
//2008/8/4 by ccm, 解决最后一笔无法删除的问题，取消DoDelay事件，避免触发使master重新取资料变为unchanged，导致无法删除。
bs.CancelPositionChanged = true;
((InfoDataSet)bs.GetDataSource()).RealDataSet.Tables[0].Merge(mergeTab);
bs.CancelPositionChanged = false;
//2008-9-9 Modified by lily 最後一筆master無法删除的問題。View在merge后master的資料會不見，重新merge一次master。
if (mergeTab.Rows.Count > 0 && mergeTab.Rows[0].RowState == DataRowState.Deleted)
{
//2007/01/12 Master-Detail-View因为无法删除最后一笔资料而新增 by Rax
ds.Tables[strTabName].Merge(mergeTab);
foreach (DataTable tb in ds.Tables)
{
if (mergedataset.Tables[tb.TableName] != null)
{
tb.Merge(mergedataset.Tables[tb.TableName]);
}
}
//2007/01/12 end
}
ArrayList keyFields = this.GetKeyFields();
int p = mergeTab.Rows.Count - 1;
if (p >= 0 && (mergeTab.Rows[p].RowState == DataRowState.Added || mergeTab.Rows[p].RowState == DataRowState.Modified))
{
int x = keyFields.Count;
object[] keyValues = new object[x];
for (int y = 0; y < x; y++)
{
keyValues[y] = mergeTab.Rows[p][keyFields[y].ToString()];
}
DataRow locRow = ((InfoDataSet)bs.GetDataSource()).RealDataSet.Tables[0].Rows.Find(keyValues);
if (locRow != null)
{
int a = bs.List.Count;
for (int b = 0; b < a; b++)
{
if (((DataRowView)bs.List[b]).Row == locRow)
{
// 2006/08/05 將View BindingSource.Relation.Active設 為False,Find()完後, 再設為True
if (infoRel.Active)
{
RelationsActive = true;
infoRel.Active = false;
}
// 2006/08/05
//2008/9/4 modified by ccm在新增的時候會插入最後一筆，導致取下一批資料
bs.CancelPositionChanged = true;
bs.Position = b;
bs.CancelPositionChanged = false;
break;
}
}
}
}
}
break;
}
}
}
}
}
}示例8: select
/// </summary>
void select()
{
string b = "";
string c = "";
DataSet ds = new DataSet();
ds.ReadXml(s + "\\RepositionColumns.xml");
if (ds != null && ds.HasChanges())
{
for (int i = 0; i < ds.Tables[0].Rows.Count; i++)
{
b = ds.Tables[0].Rows[i][0].ToString();
dataGridView1.Rows.Add(b.ToString());
}
//////////////////////////////////////////////////////////////////////////////////////////////////////
// dataGridView1.Rows.Add(b.ToString());
//////////////////////////////////////////////////////////////////////////////////////////////////////////
}
}示例9: select_sho
/// <summary>
/// /////////////////////////////////////////////////////////////////////////////
public void select_sho(string PORTFOLIO2)
{
string PORTFOLIO = "PARAMETER";
DataSet ds = new DataSet();
string s = Application.StartupPath;
string path = s + "\\InsertToken.xml";
XmlDocument doc = new XmlDocument();
doc.Load(path);
XmlNode node = doc.SelectSingleNode("//TokensDetails/Token[ parameter='" + PORTFOLIO + "']");
string parameter = (node.SelectSingleNode("parameter").InnerText);
string portfolio = (node.SelectSingleNode("portfolio").InnerText);
string AddTokenn = (node.SelectSingleNode("AddTokenn").InnerText);
dataGridView2.Columns.Add(parameter, parameter);
dataGridView2.Columns.Add(portfolio, portfolio);
for (int i = 1; i <= Convert.ToInt64(AddTokenn); i++)
{
dataGridView2.Columns.Add("Token_" + i, "Token_" + i);
}
///////////////////////////////////////////////////////////////////////////////////////////
DataSet ds2 = new DataSet();
ds2.ReadXml(s + "\\UserInput.xml");
if (ds2 != null && ds2.HasChanges())
{
string datagrd = "";
for (int i = -1; i < ds2.Tables[0].Rows.Count; i++)
{
if (i == 0 || i == -1)
{
}
else
{
// datagrd = datagrd + ds2.Tables[0].Rows[i][0].ToString();
datagrd = ds2.Tables[0].Rows[i][0].ToString();
}
dataGridView2.Rows.Add(datagrd.ToString());
}
}
///////////////////////////////////////////////////////////////////////////////////
label1.Text = PORTFOLIO2;
string ab = "";
dataGridView2.Rows[0].Cells[1].Value = PORTFOLIO2;
string path2 = s + "\\UserView2.xml";
XmlDocument doc2 = new XmlDocument();
doc2.Load(path2);
XmlNode node2 = doc2.SelectSingleNode("//User_Parameters/Parameters[ portfalio='" + PORTFOLIO2 + "']");
dataGridView2.Rows[0].Cells[0].Value = (node2.SelectSingleNode("PARAMETER").InnerText);
dataGridView2.Rows[0].Cells[2].Value = (node2.SelectSingleNode("Token_1").InnerText);
dataGridView2.Rows[0].Cells[3].Value = (node2.SelectSingleNode("Token_2").InnerText);
dataGridView2.Rows[2].Cells[1].Value = (node2.SelectSingleNode("MAXQTY").InnerText);
dataGridView2.Rows[3].Cells[1].Value = (node2.SelectSingleNode("BNSFOIFF").InnerText);
dataGridView2.Rows[4].Cells[1].Value = (node2.SelectSingleNode("BFNSQTY").InnerText);
}示例10: inert
///////////////////////////////////////////////////////////////////////////////////// Edit //////////////////////////////
void inert()
{
string parameter = "", portfalioo = "", Token = "", user = "";
string datagrd = "";
parameter = (string)dataGridView2.Rows[0].Cells[0].Value;
portfalioo = (string)dataGridView2.Rows[0].Cells[1].Value;
if (portfalioo == null)
{
MessageBox.Show("Please Insert portfalio");
return;
}
////////////////////////////////////////////////////////////////////
XmlDocument MyXmlDocument = new XmlDocument();
MyXmlDocument.Load(Application.StartupPath + "\\UserView2.xml");
XmlElement ParentElement = MyXmlDocument.CreateElement("Parameters");
XmlElement PARAMETER = MyXmlDocument.CreateElement("PARAMETER");
PARAMETER.InnerText = parameter;
XmlElement portfalio = MyXmlDocument.CreateElement("portfalio");
portfalio.InnerText = portfalioo;
ParentElement.AppendChild(PARAMETER);
ParentElement.AppendChild(portfalio);
//////////////////////////////////////////// TOken ADD ////////////////////////
string PORTFOLIO = "PARAMETER";
DataSet ds = new DataSet();
string s = Application.StartupPath;
string path = s + "\\InsertToken.xml";
XmlDocument doc = new XmlDocument();
doc.Load(path);
XmlNode node = doc.SelectSingleNode("//TokensDetails/Token[ parameter='" + PORTFOLIO + "']");
string AddTokenn = (node.SelectSingleNode("AddTokenn").InnerText);
for (int i = 1; i <= Convert.ToInt64(AddTokenn); i++)
{
// dataGridView1.Columns.Add("Token_" + i, "Token_" + i);
Token = Convert.ToString("Token_" + i);
XmlElement pToken = MyXmlDocument.CreateElement(Token);
Token = (string)dataGridView2.Rows[0].Cells[1 + i].Value;
pToken.InnerText = Token;
ParentElement.AppendChild(pToken);
}
////////////////////////////////////////////////////////////////////////// User Add //////////////////
DataSet ds2 = new DataSet();
ds2.ReadXml(s + "\\UserInput.xml");
if (ds2 != null && ds2.HasChanges())
{
for (int i = 1; i < ds2.Tables[0].Rows.Count; i++)
{
//if (i == 0 || i == -1)
//{
//}
// else
// {
datagrd = Convert.ToString(ds2.Tables[0].Rows[i][0].ToString());
XmlElement datagrdd = MyXmlDocument.CreateElement(datagrd.Replace(" ", ""));
user = (string)dataGridView2.Rows[1 + i].Cells[1].Value;
datagrdd.InnerText = user;
ParentElement.AppendChild(datagrdd);
//}
//dataGridView1.Rows.Add(""+datagrd.ToString());
}
}
////////////////////////////////////////////////////////////////////////////////////////////////
MyXmlDocument.DocumentElement.AppendChild(ParentElement);
MyXmlDocument.Save(Application.StartupPath + "\\UserView2.xml");
MessageBox.Show("Records Add Successfully");
}示例11: updateUserInfo
public bool updateUserInfo(int userID, Info newInfo)
{
SqlConnection loadConnection = new SqlConnection("server=tf-PC\\SQLEXPRESS;database=blogData;uid=admin;pwd=s1y2x3");
loadConnection.Open();
string loadString = "SELECT username,headimgID,rgtime,infoID FROM Users WHERE [email protected]";
SqlCommand loadCommand1 = new SqlCommand(loadString, loadConnection);
loadCommand1.Parameters.Add(new SqlParameter("userID", SqlDbType.NVarChar, 10));
loadCommand1.Parameters["userID"].Value = userID;
SqlDataAdapter loadAdapter = new SqlDataAdapter(loadCommand1);
DataSet loadDataSet = new DataSet();
loadAdapter.Fill(loadDataSet, "Users");
string loadUserInfoString = "SELECT * FROM Info WHERE [email protected]";
SqlCommand loadCommand3 = new SqlCommand(loadUserInfoString, loadConnection);
loadCommand3.Parameters.Add(new SqlParameter("infoID", SqlDbType.Int));
loadCommand3.Parameters["infoID"].Value = loadDataSet.Tables["Users"].Rows[0]["infoID"];
SqlDataAdapter InfoAdapter = new SqlDataAdapter(loadCommand3);
InfoAdapter.Fill(loadDataSet, "Info");
loadDataSet.Tables["Info"].Rows[0]["birthday"] = newInfo.birthday;
loadDataSet.Tables["Info"].Rows[0]["QQ"] = newInfo.QQ;
loadDataSet.Tables["Info"].Rows[0]["email"] = newInfo.email;
loadDataSet.Tables["Info"].Rows[0]["sex"] = newInfo.sex;
loadDataSet.Tables["Info"].Rows[0]["signtime"] = newInfo.signtime;
loadDataSet.Tables["Info"].Rows[0]["introduce"] = newInfo.introduce;
if(loadDataSet.HasChanges())
{
try
{
string UpdateCommandString = "SELECT * FROM Info";
SqlCommand UpdateCommand = new SqlCommand(UpdateCommandString, loadConnection);
SqlDataAdapter UpdateAdapter = new SqlDataAdapter(UpdateCommand);
SqlCommandBuilder sb = new SqlCommandBuilder(UpdateAdapter);
UpdateAdapter.Update(loadDataSet, "Info");
}
catch
{
return false;
}
}
return true;
}示例12: SaveDataSet
// Sauvegarde tous les changements effectué dans le dataset
public void SaveDataSet(string tableName, DataSet dataSet)
{
if (dataSet.HasChanges() == false)
return;
switch (connType)
{
case ConnectionType.DATABASE_MSSQL:
{
try
{
var conn = new SqlConnection(connString);
var adapter = new SqlDataAdapter("SELECT * from " + tableName, conn);
var builder = new SqlCommandBuilder(adapter);
adapter.DeleteCommand = builder.GetDeleteCommand();
adapter.UpdateCommand = builder.GetUpdateCommand();
adapter.InsertCommand = builder.GetInsertCommand();
lock (dataSet) // lock dataset to prevent changes to it
{
adapter.ContinueUpdateOnError = true;
DataSet changes = dataSet.GetChanges();
adapter.Update(changes, tableName);
PrintDatasetErrors(changes);
dataSet.AcceptChanges();
}
conn.Close();
}
catch (Exception ex)
{
throw new DatabaseException("Can not save table " + tableName, ex);
}
break;
}
case ConnectionType.DATABASE_ODBC:
{
try
{
var conn = new OdbcConnection(connString);
var adapter = new OdbcDataAdapter("SELECT * from " + tableName, conn);
var builder = new OdbcCommandBuilder(adapter);
adapter.DeleteCommand = builder.GetDeleteCommand();
adapter.UpdateCommand = builder.GetUpdateCommand();
adapter.InsertCommand = builder.GetInsertCommand();
DataSet changes;
lock (dataSet) // lock dataset to prevent changes to it
{
adapter.ContinueUpdateOnError = true;
changes = dataSet.GetChanges();
adapter.Update(changes, tableName);
dataSet.AcceptChanges();
}
PrintDatasetErrors(changes);
conn.Close();
}
catch (Exception ex)
{
throw new DatabaseException("Can not save table ", ex);
}
break;
}
case ConnectionType.DATABASE_MYSQL:
{
return;
}
case ConnectionType.DATABASE_OLEDB:
{
try
{
var conn = new OleDbConnection(connString);
var adapter = new OleDbDataAdapter("SELECT * from " + tableName, conn);
var builder = new OleDbCommandBuilder(adapter);
adapter.DeleteCommand = builder.GetDeleteCommand();
adapter.UpdateCommand = builder.GetUpdateCommand();
adapter.InsertCommand = builder.GetInsertCommand();
DataSet changes;
lock (dataSet) // lock dataset to prevent changes to it
{
adapter.ContinueUpdateOnError = true;
changes = dataSet.GetChanges();
adapter.Update(changes, tableName);
dataSet.AcceptChanges();
}
PrintDatasetErrors(changes);
conn.Close();
}
catch (Exception ex)
//.........这里部分代码省略.........
示例13: show
void show()
{
string PORTFOLIO = "PARAMETER";
DataSet ds = new DataSet();
string s = Application.StartupPath;
string path = s + "\\InsertToken.xml";
XmlDocument doc = new XmlDocument();
doc.Load(path);
XmlNode node = doc.SelectSingleNode("//TokensDetails/Token[ parameter='" + PORTFOLIO + "']");
string parameter = (node.SelectSingleNode("parameter").InnerText);
string portfolio = (node.SelectSingleNode("portfolio").InnerText);
string AddTokenn = (node.SelectSingleNode("AddTokenn").InnerText);
dataGridView1.Columns.Add(parameter, parameter);
dataGridView1.Columns.Add(portfolio, portfolio);
for (int i = 1; i <= Convert.ToInt64(AddTokenn); i++)
{
dataGridView1.Columns.Add("Token_" + i, "Token_" + i);
}
///////////////////////////////////////////////////////////////////////////////////////////
DataSet ds2 = new DataSet();
ds2.ReadXml(s + "\\UserInput.xml");
if (ds2 != null && ds2.HasChanges())
{
string datagrd = "";
for (int i = -1; i < ds2.Tables[0].Rows.Count; i++)
{
if (i == 0 || i == -1)
{
}
else
{
// datagrd = datagrd + ds2.Tables[0].Rows[i][0].ToString();
datagrd = ds2.Tables[0].Rows[i][0].ToString();
}
dataGridView1.Rows.Add(datagrd.ToString());
}
}
}示例14: run
//Activate This Construntor to log All To Standard output
//public TestClass():base(true){}
//Activate this constructor to log Failures to a log file
//public TestClass(System.IO.TextWriter tw):base(tw, false){}
//Activate this constructor to log All to a log file
//public TestClass(System.IO.TextWriter tw):base(tw, true){}
//BY DEFAULT LOGGING IS DONE TO THE STANDARD OUTPUT ONLY FOR FAILURES
public void run()
{
Exception exp = null;
DataSet ds = new DataSet();
DataRow dr;
ds.Tables.Add(GHTUtils.DataProvider.CreateParentDataTable());
try
{
BeginCase("HasChanges 1");
Compare(ds.HasChanges(),false );
}
catch(Exception ex) {exp = ex;}
finally {EndCase(exp); exp = null;}
//make some changes
dr= ds.Tables[0].Rows[1];
dr.Delete();
dr = ds.Tables[0].Rows[2];
dr[1] = "NewValue";
dr = ds.Tables[0].Select("","",DataViewRowState.Unchanged)[0];
dr = ds.Tables[0].NewRow();
dr[0] = 1;
ds.Tables[0].Rows.Add(dr);
try
{
BeginCase("HasChanges Added");
Compare(ds.HasChanges(DataRowState.Added),true );
}
catch(Exception ex) {exp = ex;}
finally {EndCase(exp); exp = null;}
try
{
BeginCase("HasChanges Deleted");
Compare(ds.HasChanges(DataRowState.Deleted) ,true );
}
catch(Exception ex) {exp = ex;}
finally {EndCase(exp); exp = null;}
try
{
BeginCase("HasChanges Modified");
Compare(ds.HasChanges(DataRowState.Modified),true);
}
catch(Exception ex) {exp = ex;}
finally {EndCase(exp); exp = null;}
try
{
BeginCase("HasChanges Unchanged");
Compare(ds.HasChanges(DataRowState.Unchanged),true);
}
catch(Exception ex) {exp = ex;}
finally {EndCase(exp); exp = null;}
}示例15: CheckUnSavedChange
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/// ��ѯ�Ƿ��и���
/// </summary>
/// <param name="isQuery">
/// �Ƿ��Dz�ѯ,true .�Dz�ѯʱ,����Ƿ��и���,
/// false �����Dz�ѯʱ,�������д���,����ʾ����</param>
/// <param name="tBindSource"></param>
public static void CheckUnSavedChange(bool isQuery, System.Windows.Forms.BindingSource tBindSource)
{
try
{
tBindSource.EndEdit();
DataSet dsBindSet = new DataSet();
if (tBindSource.DataSource is DataSet)
{
dsBindSet = (DataSet)tBindSource.DataSource;
}
else if (tBindSource.DataSource is DataTable)
{
DataTable dt = (DataTable)tBindSource.DataSource;
dsBindSet = dt.DataSet;
}
if (dsBindSet.HasChanges())
{
throw new Exception("�����ѱ����ġ�");
}
}
catch (Exception ex)
{
if (!isQuery)
{
if (!ex.Message.Equals("�����ѱ����ġ�"))
throw new Exception(ex.Message);
}
DialogResult dr = EF.EFMessageBox.Show("��������ʧδ����ĸ��ģ��Ƿ������", "epEname", MessageBoxButtons.YesNo, MessageBoxIcon.Warning);
if (dr == DialogResult.No)
{
throw new Exception("�������.���������ĸ��ġ�");
}
}
}