GridInsertionObject does not contain a property with the name

[Dan]

I too have run into this error:

DataBinding: 'Telerik.WebControls.GridInsertionObject' does not contain a property with the name 'subject'.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.Web.HttpException: DataBinding: 'Telerik.WebControls.GridInsertionObject' does not contain a property with the name 'subject'.

The error results from initiating an insert from a grid that has no rows/records.  If the grid has existing records, the insert works fine.

What I found, in my case, is a simple fix to the problem.  My SqlData Source was:

<asp:SqlDataSource ID="dsParent" runat="server" DataSourceMode="DataReader"></asp:SqlDataSource>

The problem disappeared by removing the DataSourceMode property thus:

<asp:SqlDataSource ID="dsParent" runat="server"></asp:SqlDataSource> 

I hope this will help someone down the line who runs into this problem again.  This may not solve everyones problem with this error message, but it fixed mine.  Happy coding!

[Shinu]

Hello ,

You can also refer the following help article which explains more about this error and ways in which it can be fixed.
Known reasons for error messages

Shinu