Hi all,
I am beginning with salesforce, I'm trying integrate app .net with salesforce,
My app show a error like this:
Please help me.

Server Error in '/TravelShop' 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 84: { Line 85: Line 86: txtAddress.Text = getLeadInfoResponse.City.ToString(); Line 87: txtState.Text = getLeadInfoResponse.State.ToString(); Line 88: txtZip.Text = getLeadInfoResponse.PostalCode.ToString();