How to create a graph template

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            IAoInitialize ao = new AoInitializeClass();
            ao.Initialize(esriLicenseProductCode.esriLicenseProductCodeBasic);
            SampleTemplate(@"path to your output image");
            ao.Shutdown();
        }

        static void SampleTemplate(String pathToOutImage)
        {

            // Create a data graph.
            IDataGraphT dataGraphT = new DataGraphTClass();

            // Set the graph title as an example of graph furniture to be saved in the graph template.
            dataGraphT.GeneralProperties.Title = 
                "This title was loaded from a graph template";
            dataGraphT.Update(null);

            // Create the name of the graph template file. The file must have a .tee extension.
            string templateName = System.IO.Path.GetTempFileName();
            templateName = System.IO.Path.ChangeExtension(templateName, ".tee");

            // Export the graph as a template.
            dataGraphT.ExportToFile(templateName);

            // Create a new data graph.
            IDataGraphT dataGraphT2 = new DataGraphTClass();

            // Load the previously exported template to the new graph.
            dataGraphT2.LoadTemplate(templateName);

            // Update the data graph.
            dataGraphT2.Update(null);

            // Export the graph to file (the format depends on the file extension).
            // Look for a graph title as an example of graph furniture loaded from the graph template.
            dataGraphT2.ExportToFile(pathToOutImage);

            // Delete the intermediate template file.
            System.IO.File.Delete(templateName);
        }
    }
}

Namespace ConsoleApplication1VBNET

Class Program
    Shared Sub Main(ByVal args() As String)
    Dim ao As IAoInitialize = New AoInitializeClass()
    ao.Initialize(esriLicenseProductCode.esriLicenseProductCodeBasic)
    SampleTemplate("path to your output image")
    
    ao.Shutdown()
End Sub

Shared Sub SampleTemplate(ByVal pathToOutImage As String)

' Create a data graph.
Dim dataGraphT As IDataGraphT = New DataGraphTClass()

' Set the graph title as an example of graph furniture to be saved in the graph template.
dataGraphT.GeneralProperties.Title = "This title was loaded from a graph template"
dataGraphT.Update(Nothing)

' Create the name of the graph template file. The file must have a .tee extension.
Dim templateName As String = System.IO.Path.GetTempFileName()
templateName = System.IO.Path.ChangeExtension(templateName, ".tee")

' Export the graph as a template.
dataGraphT.ExportToFile(templateName)

' Create a new data graph.
Dim dataGraphT2 As IDataGraphT = New DataGraphTClass()

' Load the previously exported template to the new graph.
dataGraphT2.LoadTemplate(templateName)

' Update the data graph.
dataGraphT2.Update(Nothing)

' Export the graph to file (the format depends on the file extension).
' Look for a graph title as an example of graph furniture loaded from the graph template.
dataGraphT2.ExportToFile(pathToOutImage)

' Delete the intermediate template file.
System.IO.File.Delete(templateName)
End Sub

End Class

End Namespace