How to set timeout in windows applications?

Question

i want to export nearly 40,000 records into excel

how much timeout period ,i have to set

for small amount of data i was Exported  into excel


When i m exporting  large amount of data into excel ,i m getting following Error

Error: Timeout expired. The timeout period elapsed prior to completion of the operation or the server not responding

How to rectify this error

help me


Thanks inadvance