Grid view-cant update or delete

I put a grid view on a web form ,when I run it -the SELECT, EDIT works

the UPDATE,DELETE makes an error although I use the sama data,I added the error :

Anyone can help?

Server Error in '/CrystalReportsWebSite1' Application.

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The data types text and nvarchar are incompatible in the equal to operator.

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.Data.SqlClient.SqlException: The data types text and nvarchar are incompatible in the equal to operator.

Source Error:

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

Stack Trace:

[SqlException (0x80131904): The data types text and nvarchar are incompatible in the equal to operator.] System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection) +95 System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection) +82 System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj) +346 System.Data.SqlClient.TdsParser.Run(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj) +3244 System.Data.SqlClient.SqlCommand.FinishExecuteReader(SqlDataReader ds, RunBehavior runBehavior, String resetOptionsString) +186 System.Data.SqlClient.SqlCommand.RunExecuteReaderTds(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, Boolean async) +1121 System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method, DbAsyncResult result) +334 System.Data.SqlClient.SqlCommand.InternalExecuteNonQuery(DbAsyncResult result, String methodName, Boolean sendToPipe) +407 System.Data.SqlClient.SqlCommand.ExecuteNonQuery() +149 System.Web.UI.WebControls.SqlDataSourceView.ExecuteDbCommand(DbCommand command, DataSourceOperation operation) +493 System.Web.UI.WebControls.SqlDataSourceView.ExecuteUpdate(IDictionary keys, IDictionary values, IDictionary oldValues) +915 System.Web.UI.DataSourceView.Update(IDictionary keys, IDictionary values, IDictionary oldValues, DataSourceViewOperationCallback callback) +179 System.Web.UI.WebControls.GridView.HandleUpdate(GridViewRow row, Int32 rowIndex, Boolean causesValidation) +1140

Hey,

What does those update/delete stored procedures look like? It seems like it may be an issue with the query.

|||I'm guessing he has a text field, and he told it to use optimistic concurrency or (CompareAllValues), which doesn't work with text fields.