How To Use Ajax For Checking Username From Database On Text Change

Sep 4, 2010

How to use ajax for checking username from database on text change?

Also give the method for on button click

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I am having a big problem with the OnTextChanged event of a textbox....

I have tried several different scenerios and just don't seem to be getting it to work right...

I either get a full page postback which is not what I want or get a very peculiar extra textbox added to my page after OnTextChanged is executed...

currently the update panel is working as expected but it inserts an extra textbox into my form "magically"... so strange...the textbox that is added keeps a running history of what is submitted...you can take a look here at the behavior.. it is the email form in the middle of the page

Sample

Here is what I am working with...

[Code]....

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[Code]....

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I have the following code on my page

[Code]....

In my codebehind, I'm trying to set it to the date I retrieve from the database, with the following

[Code]....

What happens is that the page is left with just the watermark text, but not the text I'm setting it to. However, if I inspect the textbox in VS it says the text is what it's supposed to be. I read somewhere that a similar error was because of a property referred to as isWatermarked, but I couldn't find it.

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[code]...

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[URL]

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