Decimal digit problem

On Asp.Net, in my textbox, i do not want to enter after zero three 开发者_运维技巧numbers. For example if you enter textbox 0.222 it should be 0.22. After 0.22 you should not enter anything. How can i make this?

Thanks

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Use a Masked TextBox.

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I think it is better to use an Expression instead of Masked Textbox.

With a simple RegularExpressionValidator you are able to do this, just drag one in your worksheet and then set the TargetControl of it to your Textbox, then set its value to ^\ddd.

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Using javascript add an attribute onkeyup='formatNumber(this)' on the tag.

function formatNumber(textBox) {

    var current = textBox.value;
    var output = "";

   //find '000' in current

   //delete what you want 

    textBox.value = output;
}