Asp.net - Stop Password Textbox To Be Empty When Click On Button?

Nov 29, 2011

i have a user name, password and a calendar button which when click, a calendar appear and insert the date selected into the date textbox field, and a submit button. After, i key in value for user name and password and click on the calendar button, the password textbox field because empty. So how can i going to stop the password textbox field to become empty when i click i the calendar button?? i set visible calendar only when click on the button

[Code]...

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[Code]...

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[code]...

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....
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....
I get a "NullReferenceException was unhandled" error.

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[Code]...

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CODE:

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[code].....

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[Code] .....

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[Code]....

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Here is relevant source code:

<tr>
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[Code]....

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[Code]....

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#End Region
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[Code]...

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[Code]....

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