Image with Text for Verification

I want to create an image with text for verification, similar to the ones used in Google, Yahoo in user registration. How can I create this? The HTML markup for the sample page with image verification will look like something like this:

The image is rendered using a ImageViewer.ashx handler. The textbox text is verified using a CustomValidator. In[…]

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Dynamically creating rows of textboxes

How do I add textboxes to an existing table of textboxes? How do I retrieve the values of the newly added textboxes? The challenge here is that dynamically added controls are not automatically recreated for you by the ASP.Net framework on page postback. This means if you create textboxes dynamically, then you have to re-create these textboxes on every postback.[…]

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