update the data in textboxes

Sir,
I want 2 edit data using sqldataadapter in asp.net...
The data will display in corresponding textboxes depending on various ID's that v select in dropdownlistbox..
plz giv the code 4 this....

There are many walk throughs for this right in any version of Visual Studio. On your start page, just notice the walk through section in the help portion of the start page, or just try this link

http://msdn2.microsoft.com/en-us/ywdtth2f(VS.80).aspx

You may want to try
http://www.programmingknowledge.com/simpleDataGrid.aspx