I Am having an issue on MindFusion.Diagramming.dll, Am getting “System.FormatException - Invalid length for a Base-64 char array” Error on the D:\FCNetSrc\fcnpro.src.vs2003\FlowChart.NET\MindFusion.Diagramming\Diagram.cs(5
14):
public void LoadFromString(string str), While opening the Saved diagram.

FCNetSrc\fcnpro.src.vs2003\FlowChart.NET\MindFusion.Diagramming\Diagram.cs(524):

buf = System.Convert.FromBase64String(str)


Error Description:

DiagramView1.Diagram.LoadFromString(StrXml)
Run-time exception thrown : System.FormatException - Invalid length for a Base-64 char array.
Message "Invalid length for a Base-64 char array."


Please let me know how to resolve this Issue.

MindFusion.Diagramming.dll Version 5.0.2.35462.

Yes, I have built the flowchart.net assemblies from the vs2003 source code and using in Dot Net framework 2.0 in client machine because we have merged several dll's into one using Dot Net framework 2.0 ILMerge command. But this issue is raising in a particular Diagram which is important for us. and also created and saved in same version of the diagram control.

Support Team:

Thanks for your quick reply. we are using the following method to save the Charts.

'Saving the FlowChart
    <ComVisible(True)> Public Function SaveFromActiveX() As String
       Try
           Dim StrStream As String = String.Empty
           StrStream = DiagramView1.Diagram.SaveToString
           Return StrStream
       Catch ex As System.OutOfMemoryException
           MessageBox.Show("The Uploaded images are more in size.", "TapRooT® System Software" _
                          , MessageBoxButtons.OK _
                          , MessageBoxIcon.Information _
                          )
       Catch ex As Exception
           MessageBox.Show(ex.StackTrace, "TapRooT® System Software" _
                          , MessageBoxButtons.OK _
                          , MessageBoxIcon.Information _
                          )
       End Try
    End Function


we are using FlowCharT.Net Control as ActiveX control, from ActiveX control we are sending the Diagram String to Aspx page. from .Aspx page it saves into the database.

thanks
Bhadri

Stoyo:

we are using <httpRuntime executionTimeout="6000" maxRequestLength="104801"/> in our web.config. 
I hope String Data will not be truncated. we have saved/retrieved larger size charts than Chart which we got Error.

Thanks
Bhadri

Stoyo:
 
I had tried diagram.LoadFromString(diagram.SaveToString()) no errors.

As I have AllReady Explained that we are not getting this issue with all CharTs, few of our customers got this issue. however we are unable to reproduce this issue.

thanks
bhadri

Yes, clients run the application on their own servers.

Stoyo:

Which coloumn Datatype is compatible for storing the diagram.SaveToString() into MS SQL 2000/2005 Database?

Thanks
Bhadri