ValidationSettings.ValidateOnLeave Property

Gets or sets a value that specifies whether validation is performed when the editor value is changed.

Namespace: DevExpress.Web

Assembly: DevExpress.Web.v24.1.dll

NuGet Package: DevExpress.Web

Declaration

C#

[DefaultValue(true)]
public bool ValidateOnLeave { get; set; }

VB.NET

<DefaultValue(True)>
Public Property ValidateOnLeave As Boolean

Property Value

Type	Default	Description
Boolean	true	true to perform validation on an editor value change; otherwise, false.

Property Paths

You can access this nested property as listed below:

Object Type	Path to ValidateOnLeave
ASPxEdit	.ValidationSettings .ValidateOnLeave
EditProperties	.ValidationSettings .ValidateOnLeave

Remarks

To validate edit values on a specific action (for example, on a button click), call the client-side Validate method. To disable automatical validation when the editor’s value changes, set the ValidateOnLeave property to false.

ASPX

<input type="button" value="Validate" onclick="ASPxClientControl.GetControlCollection().GetByName('tbTextBox2').Validate();" style="width: 127px;" />
<dx:ASPxTextBox ID="tbTextBox2" runat="server" ClientInstanceName="tbTextBox2" Width="170px">
    <ValidationSettings ValidateOnLeave="False">
        <RequiredField IsRequired="True" ErrorText="Field is required." />
    </ValidationSettings>
</dx:ASPxTextBox>

View Example: How to raise validation on the client