ASPxEdit.IsValid Property

Gets or sets a value that indicates whether the editor’s value passes validation.

Namespace: DevExpress.Web

Assembly: DevExpress.Web.v20.2.dll

NuGet Package: DevExpress.Web

Declaration

C#

public virtual bool IsValid { get; set; }

VB.NET

Public Overridable Property IsValid As Boolean

Property Value

Type	Description
Boolean	true if the editor’s value passes validation; otherwise, false.

Remarks

If the ValidationSettings.EnableCustomValidation property is set to true, the IsValid property can be used to specify whether the editor’s value (ASPxEdit.Value) meets your validation criteria, and can be posted to the editor being validated.

If the entered value is not valid, you can set the IsValid property to false. In this case, the value will not be posted to the editor and a error text specified by the ASPxEdit.ErrorText property will be displayed. Or, you can correct the entered value manually by updating the editor’s value and leaving the IsValid value set to true. In this case, the corrected value will be written to the editor.

Related GitHub Examples

The following code snippets (auto-collected from DevExpress Examples) contain references to the IsValid property.

Note

The algorithm used to collect these code examples remains a work in progress. Accordingly, the links and snippets below may produce inaccurate results. If you encounter an issue with code examples below, please use the feedback form on this page to report the issue.

C#

how-to-print-the-aspxscheduler-using-a-report-preview-e1625/CS/SchedulerReportPreviewTest/Account/ChangePassword.aspx.cs#L19

    tbCurrentPassword.ErrorText = "Old Password is not valid";
    tbCurrentPassword.IsValid = false;
}

show-an-error-message-for-a-control-in-editformtemplatecontainer-using-a-separate-editor-e1091/CS/AdSelection/Default.aspx.cs#L27

ASPxTextBox txt = ((ASPxGridView)sender).FindEditFormTemplateControl("ASPxTextBox1") as ASPxTextBox;
txt.IsValid = false;

how-to-show-an-error-text-for-editors-in-the-editformtemplatecontainer-e1264/CS/WebApplication12/Default.aspx.cs#L49

string errorText = errorList[errorColumn];
templateEditor.IsValid = false;
templateEditor.ValidationSettings.ErrorText = errorText;

client-and-server-validation-within-aspxgridviews-templates-e1464/CS/Default.aspx.cs#L27

ASPxEdit editor = (ASPxEdit)gvGridView1.FindRowCellTemplateControl(visibleIndex, valueColumn, "tbValue");
if(editor.IsValid) {
    int id = (int)gvGridView1.GetRowValues(visibleIndex, "ID");

tutorial-creating-a-registration-form-using-aspxeditors-e4749/CS/ASPxEditorsTutorial.Step6/RegistrationForm.aspx.cs#L21

protected void signUp_Click(object sender, EventArgs e) {
    if (eMailTextBox.IsValid && Captcha.IsValid) {
        using (OleDbConnection connection = GetConnection()) {

VB.NET

how-to-print-the-aspxscheduler-using-a-report-preview-e1625/VB/SchedulerReportPreviewTest/Account/ChangePassword.aspx.vb#L22

    tbCurrentPassword.ErrorText = "Old Password is not valid"
    tbCurrentPassword.IsValid = False
ElseIf Not user_Renamed.ChangePassword(tbCurrentPassword.Text, tbPassword.Text) Then

show-an-error-message-for-a-control-in-editformtemplatecontainer-using-a-separate-editor-e1091/VB/AdSelection/Default.aspx.vb#L24

Dim txt As ASPxTextBox = TryCast((CType(sender, ASPxGridView)).FindEditFormTemplateControl("ASPxTextBox1"), ASPxTextBox)
txt.IsValid = False

how-to-show-an-error-text-for-editors-in-the-editformtemplatecontainer-e1264/VB/WebApplication12/Default.aspx.vb#L42

Dim errorText As String = errorList(errorColumn)
templateEditor.IsValid = False
templateEditor.ValidationSettings.ErrorText = errorText

client-and-server-validation-within-aspxgridviews-templates-e1464/VB/Default.aspx.vb#L29

Dim editor As ASPxEdit = CType(gvGridView1.FindRowCellTemplateControl(visibleIndex, valueColumn, "tbValue"), ASPxEdit)
If editor.IsValid Then
    Dim id As Integer = CInt(Fix(gvGridView1.GetRowValues(visibleIndex, "ID")))