NGWS SDK Documentation  

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DataGridColumn.NullText

Gets or sets the text that is displayed when the column contains a null value.

[Visual Basic]
Overridable Public Property NullText As String
[C#]
public string NullText {virtual get; virtual set;}
[C++]
public: __property virtual String* get_NullText();
public: __property virtual void set_NullText(String*);
[JScript]
public function get NullText() : String;
public function set NullText(String);

Property Value

A string displayed in a column containing a null value.

Remarks

The DataColumn class's AllowNull property determines if a column can contain null values.

Use the EnterNullValue method to enter the value in a DataGridColumn.

Example [Visual Basic]

The following example tests a DataGridColumn to determine iits column type. If the column is a DataGridTextBox, and the DataColumn allows a null reference (in Visual Basic Nothing) values, then the NullText property is set, and the EnterNullValue method invoked.

[Visual Basic]

Private Sub SetNullText()
   Dim dgCol As DataGridColumn
   Set dgCol = DataGrid1.GridColumns(DataGrid1.CurrentCell.ColumnNumber)
   If dgCol.GetType = "DataGridTextBox" And dgCol.DataColumn.AllowNull Then
      dgCol.NullText = "Null Text"
      dgCol.EnterNullValue
   End If  
End Sub

See Also

DataGridColumn Class | DataGridColumn Members | System.WinForms Namespace | AllowNull