Error - Unable to cast object of type 'System.Web.UI.WebControls

Hello Ramco

Please try DateTime.Compare() to get the expected result.

int res = DateTime.Compare(hdfDate, objGrpResult.GrpSessionStartDate);

• Returns response is equal to 0 since d1 is equal to d2
• Returns response is equal to -1 since d1 is earlier than d2
• Returns response is equal to 1 since d1 is later than d2

Hi Mohammed

  I am getting error on below line. Valie in hdfDate is "03/06/2023 00:00:00"

Value in GrpSessionStartDate is 20/05/2023 00:00:00

if (Convert.ToDateTime(hdfDate) < objGrpResult.GrpSessionStartDate)

When i try below line then also gets error - 

DateTime sDate = DateTime.ParseExact(hdfDate.Value, "yyyy/MM/dd HH:mm:ss",
                                    CultureInfo.InvariantCulture);

Thanks

Hi ramco

You can modify your code as follows:

HiddenField hdfDate = e.Item.FindControl("hdfDate") as HiddenField;

By using the as keyword, you attempt to perform the cast, and if the cast fails, the variable hdfDate will be assigned a null value instead of throwing an exception.

Make sure to update your code accordingly and try running it again. This should resolve the casting issue you're experiencing.