SQL Server :: Implicit Conversion From Data Type Sql_variant To Uniqueidentifier Is Not Allowed?

Dec 2, 2010

Page1 contains GridView1 which displays info from Table1.GridView1 contains a CommandButton which, when clicked inserts the values of all columns, plus a calculated value which goes into an extra column into Table2 handled in the RowCommand event handler of GridView1.Page2 contains GridView2 which displays info from Table2.GridView2 allows the user to alter the value of one of the columns in Table2 using the standard Edit/Update link.All this worked well until...I added UserId and SessionId fields to Table2 (uniqueidentifier and varchar(MAX) respectively,I added the following code to Page1 Code Behind to insert these values from the RowCommand handler:

[Code]....

All of this works beautifully. But... I then added this code to GridView2's RowUpdating event handler:

[Code]....

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