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One of the coolest features of ASP.NET is the viewstate...the feature that allows textboxes and other form controls to 'remember' their values when the user posts back to the form. This is a huge time saver over ASP classic. However, did you know that you can also take advantage of the viewstate with your own custom variables? It's easy...just do the following:
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//**************************************
// Name: Add your own custom values to .NET form viewstates
// Description:One of the coolest features of ASP.NET is the viewstate...the feature that allows textboxes and other form controls to 'remember' their values when the user posts back to the form. This is a huge time saver over ASP classic. However, did you know that you can also take advantage of the viewstate with your own custom variables? It's easy...just do the following:
// By: Ian Ippolito (vWorker)
//
// Assumes:This stores your data in the statebag. Note...the variable name IS casesensitive, so be careful on that.
//
//This code is copyrighted and has// limited warranties.Please see http://www.Planet-Source-Code.com/vb/scripts/ShowCode.asp?txtCodeId=452&lngWId=10//for details.//**************************************
ViewState("MyVar")="My Value"
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Response.write ViewState("MyVar")
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Other User Comments
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 1/10/2003 2:40:21 PM: Ken Wayne
How is this different than using a session variable?
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1/10/2003 2:42:06 PM: Ian Ippolito (RAC)
Ken,
A session variable will store the information server side...taking up server memory. This stores it client side in the viewstate on the form, which doesn't take up any server memory.
Ian
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4/18/2003 5:53:12 AM: Doug Cameron
Will this work on redirects, or will it only work on a postback? I Thought the view state only works on a postback, am I wrong, or missing something?
Doug
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4/18/2003 12:08:13 PM: Ian Ippolito (RAC)
Doug,
Yes...on postback only. It's actually implemented by .NET as a hidden input variable on the form...which doesn't work on redirects.
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9/21/2005 6:35:42 AM: Alaeddin Hallak
cool!
been wondering why just using the first line doesn't store the viewstate.. till now that i find out you have to response.write it..
thanks alot!
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