Rank 1
Iron
Veteran
We are in the early process of converting from VB to C#. Before we convert, we are turning on Option Strict, one project at a time. I got the following Late Binding error on a RadDropDownList.DataSource. DataSource is deemed as an object (line 09 & 14), which is what is throwing the error, but not sure how to repair this. (error screenshot attached)
01.Public Shared Function IndexOfKeyOrValue(ByRef ddl As RadDropDownList, ByVal myString As String, ByVal LocateKey As Boolean) As Integer02. ' What I would like to do is pass any control to this function, see if it has a datasource and then do the rest.03. ' Use the TypeOf to determine the type of the control04. 'AddEvent("IndexOfKeyOrValue Looking For: " & myString & " in " & ddl.Name)05. Try06. For xx As Integer = 0 To ddl.Items.Count07. 'AddEvent(ddl.DataSource(xx).Key & " " & ddl.DataSource(xx).Value)08. If LocateKey Then09. If ddl.DataSource(xx).Key = myString Then10. 'AddEvent("---- Index Found = " & xx)11. Return xx12. End If13. Else14. If ddl.DataSource(xx).Value = myString Then15. 'AddEvent("---- Index Found = " & xx)16. Return xx17. End If18. End If19. 20. Next21. Catch ex As Exception22. ' AddEvent("---- NOT FOUND Index = -1")23. Return -124. End Try25.End Function 'IndexOfKeyOrValue3 Answers, 1 is accepted
Hello,
According to the provided picture, it seems that you receive a specific for VB Option Strict statement that restricts implicit data type conversions. This seems to be more like a general programming question this is why I made research in MSDN and StackOverFlow. The following threads might be useful in resolving this conflict:
https://docs.microsoft.com/en-us/dotnet/visual-basic/misc/bc30574
https://stackoverflow.com/questions/12375405/option-strict-on-disallows-late-binding
https://stackoverflow.com/questions/2454552/what-do-option-strict-and-option-explicit-do
https://stackoverflow.com/questions/8283505/late-binding-and-option-strict
Let me know if you have other questions.
Regards,
Nadya
Progress Telerik
Virtual Classroom, the free self-paced technical training that gets you up to speed with Telerik and Kendo UI products quickly just got a fresh new look + new and improved content including a brand new Blazor course! Check it out at https://learn.telerik.com/.
Rank 1
Iron
Veteran
Hello,
Thank you for your understanding.
If you have questions that are not directly related to RadControls from the Telerik UI for WinForms suite, it is suitable to search in the relevant forums where similar questions might have been already discussed and would be helpful for you. In addition, I can suggest our free online C#/VB converter tool: https://converter.telerik.com/. Feel free to use it if it is suitable for you.
Should you have other questions about controls from Telerik UI for Winforms suite do not hesitate to contact us.
Regards,
Nadya
Progress Telerik
Virtual Classroom, the free self-paced technical training that gets you up to speed with Telerik and Kendo UI products quickly just got a fresh new look + new and improved content including a brand new Blazor course! Check it out at https://learn.telerik.com/.