ASPxComboBox.SelectedIndexChanged Event

Fires when the user changes the selection.

Namespace: DevExpress.Web

Assembly: DevExpress.Web.v24.1.dll

NuGet Package: DevExpress.Web

Declaration

C#

public event EventHandler SelectedIndexChanged

VB.NET

Public Event SelectedIndexChanged As EventHandler

Event Data

The SelectedIndexChanged event's data class is EventArgs.

Remarks

The editor handles the selection change on the server and raises the SelectedIndexChanged event in the following cases:

• The ASPxEdit.AutoPostBack property is set to true.
• The ASPxClientComboBox.SelectedIndexChanged event’s processOnServer argument is set to true.

ASPX

<dx:ASPxTextBox ID="ASPxTextBox1" runat="server" Text="Choose the country"></dx:ASPxTextBox>

<dx:ASPxComboBox ID="ASPxComboBox1" runat="server" OnSelectedIndexChanged="ASPxComboBox1_SelectedIndexChanged">
    <Items>
        <dx:ListEditItem Text="Afghanistan" Value="1" />
        <!--...-->
    </Items>
    <ClientSideEvents SelectedIndexChanged="function(s, e) { e.processOnServer=true; }" />
</dx:ASPxComboBox>

C#

protected void ASPxComboBox1_SelectedIndexChanged(object sender, EventArgs e){     
    ASPxComboBox comboBox = (ASPxComboBox)sender;
    ASPxTextBox1.Text = comboBox.SelectedItem.ToString();
}

VB.NET

Protected Sub ASPxComboBox1_SelectedIndexChanged(ByVal sender As Object, ByVal e As EventArgs)
    Dim comboBox As ASPxComboBox = CType(sender, ASPxComboBox)
    ASPxTextBox1.Text = comboBox.SelectedItem.ToString()
End Sub