The validation message from the requiredfieldvalidator is persisting even after filling the textbox with javascript

Is the textbox empty or not when using RequiredFieldValidator? When clicking the submit button, an error message appears but if the textbox is filled using javascript and then clicked elsewhere, the error message does not disappear. However, if something is typed over it and the cursor moves away, the error message will be hidden.

<asp:TextBox runat="server" ID="txtValue" ClientIDMode="Static" />
<asp:RequiredFieldValidator ID="_validatorForExeFile" runat="server" ControlToValidate="txtValue">
<asp:Image ID="_imgExeFolderName" runat="server" ToolTip="Main executable missing." ImageUrl="~/error.png" meta:resourcekey="_actionExeFolderIconResource" />
</asp:RequiredFieldValidator>
javascriptc#asp.netwebforms

Answer №1

To achieve the same outcome as manually typing in the TextBox using jQuery, you can trigger a change event.

$('#txtValue').val('New Value');
$('#txtValue').change();

Answer №2

When working with JavaScript, make sure to enable the validator after assigning a value by using the ValidatorEnable function along with the RequiredFieldValidator ID. ValidatorEnable(document.getElementById('<%= _validatorForExeFile.ClientID %>'),true);

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