ERROR ->> Object reference not set to an instance of an object.

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Hi,
I am working on a asp.net C# project,
On executing, I get an error and am redirected to the following page
Server Error in '/' Application.
Object reference not set to an instance of an object.
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.NullReferenceException: Object reference not set to an instance of an object.

Source Error:

Line 186: clsRoomTemplate_DAL _clsRoomTemplate_DAL = new clsRoomTemplate_DAL();
Line 187: DataTable dtCustomerSelectedItem = _clsRoomTemplate_DAL.PopulateCustomerSelectedItem();
Line 188: if (dtCustomerSelectedItem.Rows.Count > 0)
Line 189: {
Line 190: // string ImagePath = @"/Images/sofa1.jpg"; //Your Image Path

Kindly help
thanks

Posted 4-Dec-12 1:20am

Ash29

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MT_ · Answer 1 · 2012-12-04T01:25:00

Solution 1

Check for nullability

C#

clsRoomTemplate_DAL _clsRoomTemplate_DAL = new clsRoomTemplate_DAL();
if(_clsRoomTemplate_DAL != null)
{
 // your code
}
else
{
// handle exception
}

Hope that helps.

Posted 4-Dec-12 1:25am

MT_

Krunal Rohit · Answer 2 · 2012-12-04T01:28:00

Solution 2

DataTable dtCustomerSelectedItem = _clsRoomTemplate_DAL.PopulateCustomerSelectedItem();
if (dtCustomerSelectedItem.Rows.Count > 0)
{
       string ImagePath = @"~/Images/sofa1.jpg"; //Your Image Path 
}

Posted 4-Dec-12 1:28am

Krunal Rohit