ValidationEventArgs.SetError(Object) Method

Displays an error within the editor.

Namespace: DevExpress.Xpf.Editors

Assembly: DevExpress.Xpf.Core.v14.2.dll

Declaration

C#

public void SetError(
    object errorContent
)

VB.NET

Public Sub SetError(
    errorContent As Object
)

Parameters

Name	Type	Description
errorContent	Object	An object that specifies the error content.

Remarks

The SetError method automatically sets the ValidationEventArgs.IsValid property to false. If the errorContent parameter is set to an empty string or null, the ValidationEventArgs.IsValid property is set to true and the error isn't displayed.

C#

using DevExpress.Xpf.Editors.Internal;
//...
private void textEdit_Validate(object sender, ValidationEventArgs e) {
    if(Convert.ToDouble(e.Value) <= 0)
        e.SetError("Negative values are not allowed. Please correct.", ErrorType.Critical);
}

The image below shows the result: