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How are .NET control IDs assigned for controls? (_ctl0_...)

Are control IDs dynamically assigned each time a page loads for .NET
controls? So, if there's a text box which has been assigned the ID
"_ctl0_txtName" and I refer to that name in javascript, might the ID change
at some point in the future to something like "_ctl5_txtName"making the
script invalid?
Sep 23 '05 #1
1 1662
It may change in future. Use the ClientID property instead.

"Glenn" <Gl***@discussions.microsoft.com> wrote in message
news:49**********************************@microsof t.com...
Are control IDs dynamically assigned each time a page loads for .NET
controls? So, if there's a text box which has been assigned the ID
"_ctl0_txtName" and I refer to that name in javascript, might the ID change
at some point in the future to something like "_ctl5_txtName"making the
script invalid?
Sep 23 '05 #2

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