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Chris
130
UltraWebChart.LoadPreset Issue
posted

Hi, currently I've been having an issue with the loadpreset method for ultrawebchart.  I have a webchart on my webpage which is bare and invisible when I create it. 

<igchart:UltraChart runat="server" Visible="false" ID="ultraChart1"></igchart:UltraChart> 

When a user clicks on a specific piece of data my code looks to see if there is a chart attached to it.  If there is then it set the visible property to true and binds the data from xml.  Here is my c# code that sets the file path for the xml file and reads through it.

            FileInfo fi = new FileInfo(FileName);
      string strDirectory = fi.Directory.Parent.FullName;
      XmlTextReader xmlReader = null;
      XmlReader reader = null;       

      try

      {

            xmlReader = new XmlTextReader(FileName);
            XmlReaderSettings settings = new XmlReaderSettings();
            settings.IgnoreWhitespace = true;
            reader = XmlReader.Create(xmlReader, settings);
            reader.Read();
            OLAPDashboardProperties dp = new OLAPDashboardProperties(); 

           while (reader.Read())

            {

              .

                         .

                         .                       
                       else if (reader.Value.ToString() == "Chart1Settings")            { 

            reader.Read();

            string str = reader.Value;

            ultraChart1.LoadPreset(Path.Combine(strDirectory, str), false);

            }

              .

                         .                        

                         .

The ultraChart1.LoadPreset(Path.Combine(strDirectory, str), true); line returns a “Object reference not set to an instance of an object” error.  The ultraChart1 gets set in the html, and strDirectory and str are both valid file paths.  Also I have tried the string overload method of LoadPreset and returns the same thing. 

I’m currently stumped as to why this is happening so any help will be much appreciated.  If I need to provide anymore code or explanation please ask.

Thanks for any help in advance.