Archive for category VSTA

SecurityException was unhandled by user code – VSTA, C#, InfoPath 2007

I got this error, while I was developing a InfoPath form in VSTA (Visual Studio Tools for Applications 2008) . This was my enviornment:

  • Windows 7
  • VSTA 2008
  • InfoPath 2007

Scenario: I was trying to get the user information from Active Directory(AD) and then display in an InfoPath form. Here is the C# code I have written in the VSTA:

public void CTRL1_5_Clicked(object sender, ClickedEventArgs e)
 string strUserName = System.Environment.UserName;

 string xpath2 = "/my:myFields/my:field1";
 XPathNavigator field2 = MainDataSource.CreateNavigator().SelectSingleNode(xpath2, NamespaceManager);
 field2.SetValue(GetOU(strUserName)); //Get Organization Unit(OU) from Acitve Directory(AD)

This is the error message I have got: 😦

Solution: I have fixed this issue in a different situation, just read in my previous post.

Thanks. R./

Happy InfoPathing. 🙂


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How to determine XPath of a User Control in InfoPath 2007

When I was doing customization in InfoPath, I had some difficulties to find the XPath of user controls, after spending several minutes I found a way to determine the XPath in InfoPath 2007. I just wanted to share this in my blog, because there is no any straight forward answer in the web.

Step 1: Create a blank InfoPath template and add an User Control from the Controls Design Tasks (On your right hand side of the InfoPath). In this example I have added two Text Boxes and a Button and re-named them.

Step 2: Select the user control and click the Data Source in the Design Tasks.

Step 3: Now, you can see the selected control’s highlighted name in the Drop Down List.

Step 4: Click the Drop Down arrow and select the Copy XPath in the list.

Step 5: That’s all, you can use the XPath in your code. 🙂

Thanks, R./

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How to set the default programming language for InfoPath 2007/2010

Recently I have developed a DIP (Document Information Panel) for a SharePoint template using InfoPath, which is accessing the data from a SQL database. So I got a chance to play around with InfoPath and faced some issues with the trust level security and all, I will post the step by step details later. 🙂

Depend on our requirements we can choose the programming language in InfoPath, there are 4 different languages (According to my knowledge C#, VB.Net, JScript and VBScript) in InfoPath and there are some limitation/difficulties in scripting languages (debugging, not supported in browser forms and lack of resources), so we will stick with our familiar C# or VB.Net. We can use either Visual Studio Tools for Applications (VSTA) or Visual Studio, in this example I used VSTA.

Step 1: Open a InfoPath template which you want to set the programming language.

Step 2: For 2007: Go to Tools menu and select Form Options (Tools –> Form Options)

For 2010:  Go to Developer tab menu and select Language button  (Developer Menu –> Language)

Step 3: On the Form Options dialog box, select the programming on the list, then select the language in the Form template code language drop down list box and click Ok (Programming –> Form template code language)

For 2007:

For 2010:

Step 4: We are ready to rock 🙂  If you want to code in the Form loading event, just go to Tools –> Programming –> Loading Events..



Step 5: Happy Coding..!




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