RequiredFieldValidator validating incorrectly on RadComboBox

[Karl]

Hi I have a RadCombobox control, and a requiredFieldValidator that validates it for empty text.
The thing is that when I tried to key in any text, it gives me the validation error (instead of the other way round). So when I typed in "testing" it prompts the error. When I removed it, it is still there.

The error will not disappear until I tried to select one of the item inside the dropdownlist.

Anyone had any idea?

Below is my aspx code:

<telerik:RadComboBox ID="radProcessLn" runat="server" AllowCustomText="true" EnableScreenBoundaryDetection="False" EmptyMessage="Insert/select" />
<asp:RequiredFieldValidator ID="rfvProcessLn" ControlToValidate="radProcessLn" ErrorMessage="Please enter Process Ln / Operation" InitialValue="" ValidationGroup="Submit" CssClass="mandatory" runat="server"Display="Dynamic" />

Update: Tested it out on Google Chrome, IE8, and IE7 and the validation is working just fine. But it's not in IE9.

[Shinu]

Hello Karl,

As a work around, you can try using CustomValidator instead of RequiredFieldValidator. Please go through the following help article for more on this.
Validate Combobox by Value

Thanks,
Shinu.

[Ravinder]

Hi, I am using RequiredField Validator for RadComboBox,but it is working fine for the first time,if i go back and click it will again asking,
it should not like that.How I can achieve   

 

[Shinu]

Hi Ravinder,

Please take a look into the following code snippet I tried where the RequiredField Validator for RadComboBox works as expected.

ASPX:

<telerik:RadComboBox ID="RadComboBox1" runat="server" EmptyMessage="select">
    <Items>
        <telerik:RadComboBoxItem Text="Item1" runat="server" />
        <telerik:RadComboBoxItem Text="Item2" runat="server" />
        <telerik:RadComboBoxItem Text="Item3" runat="server" />
    </Items>
</telerik:RadComboBox>
<asp:RequiredFieldValidator ID="RequiredFieldValidator1" runat="server" ErrorMessage="*" ControlToValidate="RadComboBox1">
</asp:RequiredFieldValidator>
<telerik:RadButton ID="RadButton1" runat="server" Text="Confirm" OnClick="RadButton1_Click">
</telerik:RadButton>

C#:

protected void Page_Load(object sender, EventArgs e)
{
    Response.Cache.SetCacheability(HttpCacheability.NoCache);
}
protected void RadButton1_Click(object sender, EventArgs e)
{
    Response.Redirect("Removeitem.aspx");
}

Thanks,
Shinu.

[Bilawal]

Wow its work for me thanks man :)