C# WebControls.ParameterCollection类代码示例

 public SqlDataSourceRefreshSchemaForm(IServiceProvider serviceProvider, SqlDataSourceDesigner sqlDataSourceDesigner, ParameterCollection parameters) : base(serviceProvider)
 {
     this._sqlDataSourceDesigner = sqlDataSourceDesigner;
     this._sqlDataSource = (SqlDataSource) this._sqlDataSourceDesigner.Component;
     this._connectionString = this._sqlDataSourceDesigner.ConnectionString;
     this._providerName = this._sqlDataSourceDesigner.ProviderName;
     this._selectCommand = this._sqlDataSourceDesigner.SelectCommand;
     this._selectCommandType = this._sqlDataSource.SelectCommandType;
     this.InitializeComponent();
     this.InitializeUI();
     Array values = Enum.GetValues(typeof(TypeCode));
     Array.Sort(values, new TypeCodeComparer());
     foreach (TypeCode code in values)
     {
         ((DataGridViewComboBoxColumn) this._parametersDataGridView.Columns[1]).Items.Add(code);
     }
     Array array = Enum.GetValues(typeof(DbType));
     Array.Sort(array, new DbTypeComparer());
     foreach (DbType type in array)
     {
         ((DataGridViewComboBoxColumn) this._parametersDataGridView.Columns[2]).Items.Add(type);
     }
     ArrayList list = new ArrayList(parameters.Count);
     foreach (Parameter parameter in parameters)
     {
         list.Add(new ParameterItem(parameter));
     }
     this._parametersDataGridView.DataSource = list;
     this._commandTextBox.Text = this._selectCommand;
     this._commandTextBox.Select(0, 0);
 }

		public IList GetTableData (string tableName, DataSourceSelectArguments args, string where, ParameterCollection whereParams)
		{
			if (String.Compare (tableName, "BazValidationAttributesTable", StringComparison.OrdinalIgnoreCase) == 0)
				return BazValidationAttributes;

			return null;
		}

        /// <summary>
        /// This function takes in the query that needs to be executed and returns a data reader as output
        /// </summary>
        /// <param name="Conn">The SQL Connection to be used</param>
        /// <param name="CommType">The Command type whether it is stored procedure or a simple query</param>
        /// <param name="CommString">If Stored procedure, then the name of the stored procedure, if simple query, then the query in
        /// string format</param>
        /// <param name="Parameters">List of parameters, if any required for Stored procedure</param>
        /// <returns>SQL Data reader that is the output of the select query executed</returns>
        public static SqlDataReader ExecuteDataReader(SqlConnection Conn, CommandType CommType, string CommString, ParameterCollection Parameters)
        {
            SqlDataReader return_sdr = null;
            try
            {
                SqlCommand comm = new SqlCommand(CommString, Conn);
                comm.CommandType = CommType;
                if (Parameters != null && Parameters.Count > 0)
                {
                    foreach (Parameter param in Parameters)
                    {
                        if (param.DefaultValue == "")
                            comm.Parameters.AddWithValue(param.Name, DBNull.Value);
                        else
                            comm.Parameters.AddWithValue(param.Name, param.DefaultValue);
                    }
                }
                if (Conn.State != ConnectionState.Open)
                {
                    Conn.Open();
                }
                return_sdr = comm.ExecuteReader();

            }
            catch (SqlException sqx)
            {
                throw new Exception("SQLException : " + sqx.ErrorCode + Environment.NewLine + "Line Number : " + sqx.LineNumber + " Message : " + sqx.Message + Environment.NewLine + "Stack Trace :" + Environment.NewLine + sqx.StackTrace);
            }
            catch (Exception exp)
            {
                throw new Exception("Exception : " + exp.InnerException + Environment.NewLine + " Message : " + exp.Message + Environment.NewLine + "Stack Trace :" + Environment.NewLine + exp.StackTrace);
            }
            return return_sdr;
        }

 public static bool MergeDictionaries(object dataObjectType, ParameterCollection reference, IDictionary source,
                                       IDictionary destination, IDictionary destinationCopy, IDictionary<string, Exception> validationErrors) {            
     if (source != null) {
         foreach (DictionaryEntry de in source) {
             object value = de.Value;
             // search for a parameter that corresponds to this dictionary entry.
             Parameter referenceParameter = null;
             string parameterName = (string)de.Key;
             foreach (Parameter p in reference) {
                 if (String.Equals(p.Name, parameterName, StringComparison.OrdinalIgnoreCase)) {
                     referenceParameter = p;
                     break;
                 }
             }
             // use the parameter for type conversion, default value and/or converting empty string to null.
             if (referenceParameter != null) {
                 try {
                     value = referenceParameter.GetValue(value, true);
                 }
                 catch (Exception e) {
                     // catch conversion exceptions so they can be handled. Note that conversion throws various
                     // types of exceptions like InvalidCastException, FormatException, OverflowException, etc.
                     validationErrors[referenceParameter.Name] = e;
                 }
             }
             // save the value to the merged dictionaries.
             destination[parameterName] = value;
             if (destinationCopy != null) {
                 destinationCopy[parameterName] = value;
             }
         }
     }
     return validationErrors.Count == 0;
 }

		internal void SetCachedObject (string methodName, ParameterCollection parameters, object o)
		{
			if (o == null)
				return;

			string key = GetKeyFromParameters (methodName, parameters);

			if (DataCache [key] != null)
				DataCache.Remove (key);

			DateTime absoluteExpiration = Cache.NoAbsoluteExpiration;
			TimeSpan slidindExpiraion = Cache.NoSlidingExpiration;

			if (cacheDuration > 0) {
				if (cacheExpirationPolicy == DataSourceCacheExpiry.Absolute)
					absoluteExpiration = DateTime.Now.AddSeconds (cacheDuration);
				else
					slidindExpiraion = new TimeSpan (0, 0, cacheDuration);
			}

			string [] dependencies;
			if (cacheKeyDependency.Length > 0)
				dependencies = new string [] { cacheKeyDependency };
			else
				dependencies = new string [] { };

			DataCache.Add (key, o, new CacheDependency (new string [] { }, dependencies),
				       absoluteExpiration, slidindExpiraion, CacheItemPriority.Default, null);
		}

 internal WebControlParameterProxy(Parameter parameter, ParameterCollection parameterCollection, EntityDataSource entityDataSource)
 {
     Debug.Assert(null != entityDataSource);
     _parameter = parameter;
     _collection = parameterCollection;
     _entityDataSource = entityDataSource;
     VerifyUniqueType(_parameter);
 }

        public static DataSet getfieldAreaTopValue(int id)
        {
            string sql = "GetFieldAreaTopValue";
            ParameterCollection par = new ParameterCollection();
            par.Add("@Id", id.ToString());

            return SQLDatabaseManager.ExecuteDataSet1(sql, par);

        }

 private void BuildCommand(IConfigurationElement parametersSection, ParameterCollection parameters)
 {
     parameters.Clear();
     foreach (IConfigurationElement parameterElement in parametersSection.Elements.Values)
     {
         Parameter commandParameter = new Parameter();
         foreach (IConfigurationElement propertyElement in parameterElement.Elements.Values)
         {
             ReflectionServices.SetValue(commandParameter, propertyElement.GetAttributeReference("name").Value.ToString(), propertyElement.GetAttributeReference("value").Value);
         }
         parameters.Add(commandParameter);
     }
 }

		public IList GetTableData (string tableName, DataSourceSelectArguments args, string where, ParameterCollection whereParams)
		{
			if (String.Compare (tableName, "EmployeeTable", StringComparison.OrdinalIgnoreCase) == 0)
				return Employees;

			if (String.Compare (tableName, "SeasonalEmployeeTable", StringComparison.OrdinalIgnoreCase) == 0)
				return SeasonalEmployees;

			if (String.Compare (tableName, "BazDataTypeDefaultTypesTable", StringComparison.OrdinalIgnoreCase) == 0)
				return DefaultDataTypes;

			return null;
		}

		public IList GetTableData (string tableName, DataSourceSelectArguments args, string where, ParameterCollection whereParams)
		{
			if (String.Compare (tableName, "AssociatedFooTable", StringComparison.OrdinalIgnoreCase) == 0)
				return AssociatedFoo;

			if (String.Compare (tableName, "AssociatedBarTable", StringComparison.OrdinalIgnoreCase) == 0)
				return AssociatedBar;

			if (String.Compare (tableName, "BazWithDataTypeAttributeTable", StringComparison.OrdinalIgnoreCase) == 0)
				return BazWithDataTypeAttribute;

			return null;
		}

 public SqlDataSourceParameterValueEditorForm(IServiceProvider serviceProvider, ParameterCollection parameters) : base(serviceProvider)
 {
     this._parameterItems = new ArrayList();
     foreach (Parameter parameter in parameters)
     {
         this._parameterItems.Add(new ParameterItem(parameter));
     }
     this.InitializeComponent();
     this.InitializeUI();
     string[] names = Enum.GetNames(typeof(TypeCode));
     Array.Sort<string>(names);
     ((DataGridViewComboBoxColumn) this._parametersDataGridView.Columns[1]).Items.AddRange(names);
     string[] array = Enum.GetNames(typeof(DbType));
     Array.Sort<string>(array);
     ((DataGridViewComboBoxColumn) this._parametersDataGridView.Columns[2]).Items.AddRange(array);
     this._parametersDataGridView.DataSource = this._parameterItems;
 }

        public EntityDataSourceStatementEditorForm(System.Web.UI.Control entityDataSource, IServiceProvider serviceProvider,
            bool hasAutoGen, bool isAutoGen, string propertyName, string statementLabelText, string statementAccessibleName,
            string helpTopic, string statement, ParameterCollection parameters)
            : base(serviceProvider)
        {

            _entityDataSource = entityDataSource;
            InitializeComponent();
            InitializeUI(propertyName, statementLabelText, statementAccessibleName);
            InitializeTabIndexes();
            InitializeAnchors();

            _helpTopic = helpTopic;

            if (!hasAutoGen)
            {
                HideCheckBox();
            }

            _parameters = parameters;

            _autoGenerateCheckBox.Checked = isAutoGen;
            _statementPanel.Enabled = !isAutoGen;

            _statementTextBox.Text = statement;
            _statementTextBox.Select(0, 0);

            List<Parameter> paramList = new List<Parameter>();
            foreach (Parameter p in parameters)
            {
                paramList.Add(p);
            }
            _parameterEditorUserControl.AddParameters(paramList.ToArray());

            _cachedStatementText = null;
        }

        private static void ApplyParameterCollection(Row row, ParameterCollection parameters, string prefix)
        {
            if (string.IsNullOrEmpty(prefix))
                prefix = "{0}";
            foreach (RowCell cell in row.Cells)
            {
                string value = null;
                if (cell.Value != null)
                    value = cell.Value.ToString();

                if (parameters[cell.CellId] == null)
                    parameters.Add(cell.CellId, row.Columns[cell.CellId].DataType, value);
                else
                    parameters[cell.CellId].DefaultValue = value;

                if (parameters[String.Format("@" + prefix, cell.CellId)] == null)
                    parameters.Add(String.Format("@" + prefix, cell.CellId), row.Columns[cell.CellId].DataType, value);
                else
                    parameters[String.Format("@" + prefix, cell.CellId)].DefaultValue = value;
            }
        }

		public IList GetTableData (string tableName, DataSourceSelectArguments args, string where, ParameterCollection whereParams)
		{
			return null;
		}

        /// <devdoc>
        /// Adds parameters to an DbCommand from an IOrderedDictionary.
        /// The exclusion list contains parameter names that should not be added
        /// to the command's parameter collection.
        /// </devdoc>
        private void AddParameters(DbCommand command, ParameterCollection reference, IDictionary parameters, IDictionary exclusionList, string oldValuesParameterFormatString) {
            Debug.Assert(command != null);

            IDictionary caseInsensitiveExclusionList = null;
            if (exclusionList != null) {
                caseInsensitiveExclusionList = new ListDictionary(StringComparer.OrdinalIgnoreCase);
                foreach (DictionaryEntry de in exclusionList) {
                    caseInsensitiveExclusionList.Add(de.Key, de.Value);
                }
            }

            if (parameters != null) {
                string parameterPrefix = ParameterPrefix;
                foreach (DictionaryEntry de in parameters) {
                    string rawParamName = (string)de.Key;

                    if ((caseInsensitiveExclusionList != null) && (caseInsensitiveExclusionList.Contains(rawParamName))) {
                        // If we have an exclusion list and it contains this parameter, skip it
                        continue;
                    }

                    string formattedParamName;
                    if (oldValuesParameterFormatString == null) {
                        formattedParamName = rawParamName;
                    }
                    else {
                        formattedParamName = String.Format(CultureInfo.InvariantCulture, oldValuesParameterFormatString, rawParamName);
                    }
                    object value = de.Value;

                    // If the reference collection contains this parameter, we will use
                    // the Parameter's settings to format the value
                    Parameter parameter = reference[formattedParamName];
                    if (parameter != null) {
                        value = parameter.GetValue(de.Value, false);
                    }

                    formattedParamName = parameterPrefix + formattedParamName;

                    if (command.Parameters.Contains(formattedParamName)) {
                        // We never overwrite an existing value with a null value
                        if (value != null) {
                            command.Parameters[formattedParamName].Value = value;
                        }
                    }
                    else {
                        // Parameter does not exist, add a new one
                        DbParameter dbParameter = _owner.CreateParameter(formattedParamName, value);
                        command.Parameters.Add(dbParameter);
                    }
                }
            }
        }