RegisterStartupScript仅在第一次运行。 ASP.NET C＃JavaScript

Question

I have an .aspx page with the following code

<asp:Panel runat="server" ID="ImagePanel">
   <asp:UpdatePanel runat="server" ID="ImageUpdatePanel" UpdateMode="Conditional"><ContentTemplate>      
      <img id="photo" src="/Icons/Factory Layout.png" style="display: none;"/>
      <script type="text/javascript">
          function ResetImage(typeOfImage) {
              var factoryImage = $("#photo");  
                if (typeOfImage === 1) {
                    factoryImage.attr("src",document.getElementById('<%= FactoryImageFileNameHF.ClientID %>').value);
                }
                else if (typeOfImage === 2) {
                    factoryImage.attr("src",document.getElementById('<%= IncidentFactoryImageFileNameHF.ClientID %>').value);
                }

It is the ResetImage javascript function that I am trying to run with the following code in the code behind.

if (typeOfMap == 1)
{
     FactoryImageFileNameHF.Value = fileNameOfFactoryImage.FileFullPath();
     ClientScript.RegisterStartupScript(Page.GetType(), "test" + ScriptKeyHF.Value, "ResetImage(1);", true);
     ScriptKeyHF.Value = (ScriptKeyHF.Value.ToInt() + 1).ToString();
 }
 else if (typeOfMap == 2)
 {
      IncidentFactoryImageFileNameHF.Value = fileNameOfFactoryImage.FileFullPath();
      ClientScript.RegisterStartupScript(Page.GetType(), "test" + ScriptKeyHF.Value, "ResetImage(2);", true);
      ScriptKeyHF.Value = (ScriptKeyHF.Value.ToInt() + 1).ToString();
  }

The problem is that the ResetImage() method that I am calling in the RegisterStartUpScript only runs the first time on the browser. It doesn't run the second and third time of postbacks, etc. I have tried the RegisterClientScriptBlock but it runs before the javascript code is there. Does anyone have any idea why the code only runs the first time.

Answer 1

The solution is that I was using a ClientScriptManager (ClientScript) instead of the a ScriptManager so I changed the line of code to

System.Web.UI.ScriptManager.RegisterStartupScript(this.Page,Page.GetType(), "test" + ScriptKeyHF.Value, "ResetImage(1);", true);

and it works.

I have the ScriptManager on a Master page and my code was on a child page