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ERROR-Conversion from string "'," to type 'Double' is not valid

Posted By:      Posted Date: September 27, 2010    Points: 0   Category :ASP.Net


I am having  badly stuck!!I have spent hours in trying to solve that.

I am having the following loving function:


   Public Function InsertDeleteUpdate(ByVal command As String) As Boolean
            cmd.Connection = objectconnection
            cmd.CommandText = command
            Return True
        Catch ex As Exception
            Return False
End Try

 In the above function I pass the following string:

gridcost = Convert.ToDecimal(txtcost.Text)
_date = Convert.ToDateTime(txtdatefrom.Text)
patient = Convert.ToInt32(ddlpatients.SelectedValue)

 sqlstring = "execute dbo.InsertDeleteUpdate " & patient & ",'" & _date + "'," & gridcost & ",'" & txtinsurances.Text & "','" & checkreceipt.Checked + "'," & appointment_xid

The string includes a stored procedure.The store procedure includes the following parameters:

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