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object reference not set to a reference of an object error.

I call this function from the page load function

            private void LoadPage()
            {
                  if (((int)(ViewState["ProjectID"])) >0)  error on this line
                  {
                        ProjectListDB.ProjectList Project = new ProjectListDB.ProjectList();
                        SqlDataReader myRS;
                        myRS = Project.GetSystems_ProjectList(((int)ViewState["ProjectID"]));
C#

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C#
C#

C# is an object-oriented programming language created in conjunction with Microsoft’s .NET framework. Compilation is usually done into the Microsoft Intermediate Language (MSIL), which is then JIT-compiled to native code (and cached) during execution in the Common Language Runtime (CLR).

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