[Solved] ASP.Net Error: Timeout Expired for large records

Hi ahmadsubuhanl...,

You need to increase the TimeOut. The default value is 30 seconds.

It is better to use custom paging for fetching the data, instead of fetching all the records.

Only the required no of records will be fetched from the table.

For more details refer Custom Paging in ASP.Net GridView using SQL Server Stored Procedure.