LinkButton OnClick is Not Frie inside Update panal - asp.net

Question

LinkButton OnClick(LoadDocumentVersion) is Not Frie inside Update panal here is my Code in aspx page I tried using UpdateMode="Conditional" it is not fire and asyncpostback also used it is not fire
<pre>LinkButton OnClick(LoadDocumentVersion) is Not Frie inside Update panal
</pre>
<asp:UpdatePanel ID="Aspx_UpdatePanel_DocumentVersion" UpdateMode="Conditional" runat="server">
<ContentTemplate>
<asp:LinkButton ID="Aspx_LinkButton_DocumentVersion" runat="server" Style="float: right; margin: 2px 5px 2px 0;" CssClass="Label_Text9"
OnClick="LoadDocumentVersion" />
<asp:UpdateProgress runat="server" AssociatedUpdatePanelID="Aspx_UpdatePanel_DocumentVersion"
DynamicLayout="true">
<ProgressTemplate>
<img src="Images/loading.gif" />
</ProgressTemplate>
</asp:UpdateProgress>
<table border="0" width="100%" cellpadding="0" cellspacing="0" align="center" style="float: left;">
<tr valign="top">
<td style="padding: 5px;" align="center">
<asp:Repeater ID="Aspx_Repeater_DocumentVersions" runat="server">
<HeaderTemplate>
<table border="0" width="100%" cellpadding="0" cellspacing="0" align="center">
<tr valign="top" align="left" class="border_spacing">
<td class="Heading_border_left_spacing">
<asp:Label ID="Label1" runat="server" CssClass="Label_Text12_Bold" Text="<%$Resources:CRMDocument, Lbl_Attachments_FileName %>" />
</td>
<td class="Heading_border_withoutspacing">
<asp:Label ID="Label2" runat="server" CssClass="Label_Text12_Bold" Text="<%$Resources:CRMDocument, Lbl_Attachments_Type %>" />
</td>
<td class="Heading_border_withoutspacing">
<asp:Label ID="Label3" runat="server" CssClass="Label_Text12_Bold" Text="<%$Resources:CRMDocument, Lbl_Attachments_Size %>" />
</td>
<td class="Heading_border_right_spacing">
<asp:Label ID="Label4" runat="server" CssClass="Label_Text12_Bold" Text="<%$Resources:CRMDocument, Lbl_Attachments_Created_By %>" />
</td>
</tr>
</HeaderTemplate>
<ItemTemplate>
<tr valign="middle" align="left" height="25px">
<td class="border_left_spacing">
<a class="Anchor_Text9_Grey" href="DownloadAttachment.aspx?InternalPath=<%#( (System.Data.DataRowView)(Container.DataItem)).Row["InternalPath"].ToString () %>&InternalFileName=<%#( (System.Data.DataRowView)(Container.DataItem)).Row["InternalFileName"].ToString () %>&ExternalFileName=<%#( (System.Data.DataRowView)(Container.DataItem)).Row["ExternalFileName"].ToString () %>"
onclick='javascript:SafeHandleURL(this, "DownloadAttachment.aspx", "<%#( (System.Data.DataRowView)(Container.DataItem)).Row["InternalPath"].ToString ().Replace ( #"\", #"\\" ) %>", "<%#( (System.Data.DataRowView)(Container.DataItem)).Row["InternalFileName"].ToString () %>", "<%#( (System.Data.DataRowView)(Container.DataItem)).Row["ExternalFileName"].ToString () %>" );'>
<asp:Label ID="Label5" runat="server" Text='<%#( (System.Data.DataRowView)(Container.DataItem)).Row["ExternalFileName"].ToString () %>'
CssClass="Label_Text9" />  </a>
</td>
<td class="border_withoutspacing">
<asp:Label ID="Label6" runat="server" CssClass="Label_Text9" Text='<%#( (System.Data.DataRowView)(Container.DataItem)).Row["Type"].ToString () %>' /> 
</td>
<td class="border_withoutspacing Label_Text9">
<asp:Label ID="Label7" runat="server" CssClass="Label_Text9" Text='<%#( (System.Data.DataRowView)(Container.DataItem)).Row["FileSize"].ToString () %>' /> 
<asp:Label ID="Label8" runat="server" CssClass="Label_Text12_Bold" Text="<%$Resources:CRMDocument, Lbl_Attachments_Bytes %>" /> 
</td>
<td class="border_right_spacing">
<asp:LinkButton ID="LinkButton1" runat="server" Text='<%#( (System.Data.DataRowView)(Container.DataItem)).Row["CreatedBy"].ToString () %>'
CssClass="Label_Text9" CommandArgument='<%#( (System.Data.DataRowView)(Container.DataItem)).Row["CreatedByID"].ToString () %>'
OnCommand="GoToEmployee" /> 
</td>
</tr>
</ItemTemplate>
<FooterTemplate>
<tr height="10px">
<td colspan="3" />
</tr>
</table>
</FooterTemplate>
</asp:Repeater>
</td>
</tr>
</table>
</ContentTemplate>
</asp:UpdatePanel>
CodeBehind.cs
protected void LoadDocumentVersion(object sender, EventArgs e)
{
try
{
string zszFolderID = "";
string zszDocumentID = "";
string zszIsPublic = "";
EMSBLCommon.AddToLog("Document", "CRM", "View Document Versions", "");
string zszUpdateDocument = Aspx_HiddenField_DocumentPath.Value;
string zszDocumentPath = zszUpdateDocument.Substring(0, zszUpdateDocument.LastIndexOf('/'));
string zszDocumentName = zszUpdateDocument.Substring(zszUpdateDocument.LastIndexOf('/') + 1);
zszFolderID = GetFolderID(zszDocumentPath, ref zszIsPublic);
zszDocumentID = EMSBLCRM.GetDocumentID(zszFolderID, zszDocumentName).ToString();
if (!zszDocumentID.Equals("0"))
LoadDocumentAttachments(zszDocumentID);
}
catch (Exception ex)
{
Utilities.SendCrashEMail(ref ex);
}
}

Answer 1

Make sure AutoEventWireup="true" in your Page directive
Make sure you do not get errors, either client-side or server-side. Attach a debugger and step through your code to make sure of that
Your button cannot be clicked as it is because it is invisible, so I assume you invoke the click via JavaScript. To do that for a link button, you need to evaluate its href attribute: eval(document.getElementById("<%=Aspx_LinkButton_DocumentVersion.ClientID%>").getAttribute("href"));
make sure all webresource requests pass (i.e., 200 or 300s status codes). This is how the MS AJAX frameworks is fetched.
Make sure your script manager is the first control after the <form> tag and that all subsequent AJAX-enabled stuff is inside the <form> as well.