ASPxGridView.Columns Property

Provides access to a GridView’s column collection.

Namespace: DevExpress.Web

Assembly: DevExpress.Web.v21.2.dll

NuGet Package: DevExpress.Web

Declaration

C#

[DefaultValue(null)]
public GridViewColumnCollection Columns { get; }

VB.NET

<DefaultValue(Nothing)>
Public ReadOnly Property Columns As GridViewColumnCollection

Property Value

Type	Default	Description
GridViewColumnCollection	null	A GridViewColumnCollection object that represents a collection of columns within the ASPxGridView control.

Remarks

The Columns property stores a collection of GridViewColumn objects that represent columns. It provides methods that allow you to add new and remove existing columns. Individual columns can be accessed using indexed notation.

Concept

ASPxGridView Columns

Example

Declaratively:

ASPX

<dx:ASPxGridView ID="grid" ClientInstanceName="grid" runat="server" DataSourceID="SqlDataSource1" KeyFieldName="ProductID">
    <Columns>
        <dx:GridViewCommandColumn ShowSelectCheckbox="false" />
        <dx:GridViewDataColumn FieldName="ProductID" />
        <dx:GridViewDataColumn FieldName="ProductName" />
        <dx:GridViewDataColumn FieldName="UnitPrice" />
    </Columns>
</dx:ASPxGridView>

Programmatically:

C#

using DevExpress.Web;
...
protected void Page_Load(object sender, EventArgs e)  {
     ASPxGridView grid1 = new ASPxGridView();
     grid1.ID = "grid1";
     grid1.AutoGenerateColumns = false;
     grid1.DataSourceID = "SqlDataSource1";
     grid1.KeyFieldName = "ProductID";
     grid1.Columns.AddRange(new GridViewDataColumn[]{
          new GridViewDataColumn { FieldName="ProductID", ReadOnly = true, VisibleIndex = 0},
          new GridViewDataColumn() { FieldName = "ProductName", VisibleIndex = 1 },
          new GridViewDataColumn() { FieldName = "UnitPrice", VisibleIndex = 2 },
     });
     Page.Form.Controls.Add(grid1);
}

VB.NET

Imports DevExpress.Web
...
Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs)
    Dim grid1 As ASPxGridView = New ASPxGridView()
    grid1.ID = "grid1"
    grid1.AutoGenerateColumns = False
    grid1.DataSourceID = "SqlDataSource1"
    grid1.KeyFieldName = "ProductID"
    grid1.Columns.AddRange(New GridViewDataColumn() {
        New GridViewDataColumn With {
            .FieldName = "ProductID",
            .[ReadOnly] = True,
            .VisibleIndex = 0
        }, 
        New GridViewDataColumn() With {
            .FieldName = "ProductName",
            .VisibleIndex = 1
        }, 
        New GridViewDataColumn() With {
            .FieldName = "UnitPrice",
            .VisibleIndex = 2
        }
    })
    Page.Form.Controls.Add(grid1)
End Sub

Result:

Online Demos

ASPxGridView Demos