Below is my code
if (!Page.ClientScript.IsStartupScriptRegistered(Page.GetType(), scriptKey))
{
ScriptManager scriptManager = ScriptManager.GetCurrent(page);
if (scriptManager != null && scriptManager.IsInAsyncPostBack)
{
//if a MS
AJAX request, use the Scriptmanager class
ScriptManager.RegisterStartupScript(Page, Page.GetType(), scriptKey, script, true);
}
else
{
//if a standard postback, use the standard ClientScript method
Page.ClientScript.RegisterStartupScript(Page.GetType(), scriptKey, script, true);
}
}
I'm doing as suggested in this answer so that I can register startup script on both times i.e. when there is partial postback and a full postback.
The problem is Page.ClientScript.IsStartupScriptRegistered(Page.GetType(), scriptKey) always returns false when it is partial postback. And I couldn't find ScriptManager.IsStartupScriptRegistered method. As a result of this additional script is emitted on all partial/async postbacks.
Please note that I'm using script manager of AjaxControlToolkit version 4.1 i.e. ToolkitScriptManager in my masterpage. But I don't thing it has something to do with this.
UPDATE
<asp:UpdatePanel ID="ContactDetailsUpdatePanel" UpdateMode="Conditional" runat="server">
<Triggers>
<asp:AsyncPostBackTrigger ControlID="UpdateContactDetailsButton" EventName="Click" />
</Triggers>
<ContentTemplate>
<div id="ContactDetailsContent" class="contact_details_content">
<div class="customer_contactdetails_left_pane">
<div class="customer_name_field">
<asp:Label ID="CustomerNameLabel" runat="server" Text="Customer" />
<asp:TextBox ID="CustomerNameValue" runat="server" />
</div>
<div class="customer_address_field">
<asp:Label ID="CustomerAddressLabel" runat="server" Text="Address" />
<asp:TextBox ID="CustomerAddressValue" runat="server" />
<asp:TextBox ID="CustomerAddressValue1" runat="server" />
<asp:TextBox ID="CustomerAddressValue2" runat="server" />
<asp:TextBox ID="CustomerAddressValue3" runat="server" />
</div>
<div class="customer_postcode_field">
<asp:Label ID="CustomerPostcodeLabel" runat="server" Text="Postcode" />
<asp:TextBox ID="CustomerPostcodeValue" runat="server" />
</div>
</div>
<div class="customer_contactdetails_right_pane">
<div>
<asp:Label ID="CustomerContactLabel" runat="server" Text="Contact" />
<asp:TextBox ID="CustomerContactValue" runat="server" />
</div>
<div>
<asp:Label ID="CustomerTelephoneLabel" runat="server" Text="Telephone" />
<asp:TextBox ID="CustomerTelephoneValue" runat="server" />
</div>
<div>
<asp:Label ID="CustomerMobileLabel" runat="server" Text="Mobile" />
<asp:TextBox ID="CustomerMobileValue" runat="server" />
</div>
<div>
<asp:Label ID="CustomerFaxLabel" runat="server" Text="Fax" />
<asp:TextBox ID="CustomerFaxValue" runat="server" />
</div>
<div>
<asp:Label ID="CustomerEmailLabel" runat="server" Text="Email" />
<asp:TextBox ID="CustomerEmailValue" runat="server" />
</div>
<div>
<asp:Label ID="CustomerWebLabel" runat="server" Text="Web" />
<asp:TextBox ID="CustomerWebValue" runat="server" />
</div>
</div>
</div>
<div class="update_button_field">
<asp:Button ID="UpdateContactDetailsButton" runat="server" Text="Update"
onclick="UpdateContactDetailsButton_Click" />
</div>
</ContentTemplate>
</asp:UpdatePanel>
Thanks in advance.
