FilterControlEventArgs.Context Property

Provides access to the ExpressionEditorContext object, which allows you to customize the FilterEditorControl‘s “Text” tab.

Namespace: DevExpress.XtraGrid.Views.Base

Assembly: DevExpress.XtraGrid.v18.2.dll

Declaration

C#

public ExpressionEditorContext Context { get; }

VB.NET

Public ReadOnly Property Context As ExpressionEditorContext

Property Value

Type	Description
ExpressionEditorContext	An ExpressionEditorContext object that allows you to customize the FilterEditorControl‘s “Text” tab.

Remarks

To access the ExpressionEditorContext object, handle the ColumnView.FilterEditorCreated event.

C#

void gridView1_FilterEditorCreated(object sender, DevExpress.XtraGrid.Views.Base.FilterControlEventArgs e) {
    e.Context.Columns.Add(new DevExpress.Data.Controls.ExpressionEditor.ColumnInfo { Name = "New Column", Type = typeof(int) });
}

VB.NET

Private Sub gridView1_FilterEditorCreated(ByVal sender As Object, ByVal e As DevExpress.XtraGrid.Views.Base.FilterControlEventArgs)
    e.Context.Columns.Add(New DevExpress.Data.Controls.ExpressionEditor.ColumnInfo With {.Name = "New Column", .Type = GetType(Integer)})
End Sub

This allows you to add new columns or hide existing ones, change capitalization rules for columns and functions, specify a custom color palette for highlighting criteria nodes, and more. See this Expression Editor example for details.