Update panel need tio be updated for different control actions

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ASP.NET4

Hello,
I want to update my update panel for different textbox textchanged events.....
Plz help me......

Thank You

Posted 1-Jul-12 19:46pm

mavericksoft

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AshishChaudha 2-Jul-12 1:53am

didn't understand whats your requirement!!! What you have done??

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Ganesan Senthilvel · Answer 1 · 2012-07-01T19:54:00

It is strange to know that even after adding update panel / AsyncPostBackTrigger , TextBox ChangeEvent doesn't work properly. Some time its works and some times it not..Since its is Asynchronous call, we need to some time refresh, or wait or unpredictable , Hopes Microsoft will come up with competent one.. Below are easy way to check user name pretty good

In Page_Load-aspx.cs

C#

this.TextBox1.Attributes.Add("onKeyUp", "fnUNameSubmit(this);");

In aspx -add script, you code:

XML

<script language="javascript" type="text/javascript">

function fnUNameSubmit(urInput) {
var inpt= urInput.value;
if (inpt.length > 21) {
document.getElementById('<%= TextBox1.ClientID %>').style.backgroundColor = "green";
document.form1.submit();  // This is only trick we use here..
}
else {
document.getElementById('<%= TextBox1.ClientID %>').style.backgroundColor = "red";
}
  }
</script>

Sandeep Mewara · Answer 2 · 2012-07-01T20:06:00

I want to update my update panel for different textbox textchanged events
I believe you mean you want to update a updatepanel from text change event of a textbox that is not inside that updatepanel.
If so, you need to define AsyncPostbackTrigger of the update panel for that textbox textchange event with textbox autopostback property set to true.

Try:

HTML

<asp:TextBox ID="TextBox1" AutoPostback="true" runat="server"></asp:TextBox>
<asp:UpdatePanel ID="UpdatePanel1" UpdateMode="Conditional" runat="server">
    <Triggers>
      <asp:AsyncPostBackTrigger ControlID="TextBox1" EventName="TextChanged"  />
    </Triggers>
    <ContentTemplate>
        <hr />
        <asp:Label ID="Label1" runat="server"/>
    </ContentTemplate>
</asp:UpdatePanel>

Refer: MSDN: AsyncPostBackTrigger Class[^]

Update panel need tio be updated for different control actions

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