CODEWITHSUNDEEP
c#asp.net
But I'm Not A Wrapper Class
But I'm Not A Wrapper Class

Reputation: 14296

Update TextBox after a button click

I have this TextBox:

<asp:TextBox id="locSelectedCameraGroupName" runat="server" ></asp:TextBox>

I have this back end code:

protected void btnCameraGroup_ServerClick(object sender, EventArgs e)
{
    locSelectedCameraGroupName.Text = "test string!";
}

This method is called after clicking a button:

<asp:linkbutton id="btnCameraGroup" runat="server" onclick="btnCameraGroup_ServerClick" onclientclick="ShowCameraGroupPopup()"
    style="font-size: 1.2em; text-decoration: none; cursor: pointer; background-color:grey; "> 
<!-- TODO:  Make button have round corners...css? -->
</asp:linkbutton>

However, the text does not update. This is a user control. The line is reached (according to my debugger). When I move the line to my page load, it works. Is there something wrong I am doing?

The following method ShowCameraGroupPopup just shows/hides some tags I don't think it has much to do with the issue, but here it is anyways:

function ShowCameraGroupPopup() {
    $('#<%=waitIcon.ClientID%>').show();
    $('#<%=divMainContent.ClientID%>').hide();
    $("#divCameraGroupPopup").modal("show");
    return true;
}

This is the flow after clicking the link button:

  1. Page_Load hit (is post back)
  2. btnCameraGroup_ServerClick hit
  3. Tab name = Second tab (this is the info I want, but for some reason the text isn't updated)

Upvotes: 1

Views: 2503

Answers (2)

But I&#39;m Not A Wrapper Class
But I&#39;m Not A Wrapper Class

Reputation: 14296

I needed an UpdatePanel (and ContentTemplate) around the TextBox with a Triggers (AsyncPostBackTrigger) as so:

<asp:UpdatePanel id="groupNamePanel" runat="server" updatemode="Conditional"> 
     <Triggers>
        <asp:AsyncPostBackTrigger ControlID="btnCameraGroup" />
    </Triggers>
    <ContentTemplate>
        <asp:TextBox id="locSelectedCameraGroupName" runat="server" ></asp:TextBox>
    </ContentTemplate>
</asp:UpdatePanel>

Upvotes: 1

Mahdi Rostami
Mahdi Rostami

Reputation: 305

If you have Page_Load() event in your codes, change Page_Load() content like below:

private void Page_Load()
{
    if (!Page.IsPostBack)
    {
        //copy previous page load codes here
    }
}

Upvotes: 0

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