Maskedtextbox validatingtype


14-Sep-2019 20:15

maskedtextbox validatingtype-6

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If you change a mask when Masked Text Box already contains user input filtered by a previous mask, Masked Text Box will attempt to migrate that input into the new mask definition. Assigning a zero-length string as the mask will preserve any existing data in the control.

If the value is a valid Date Time, the code performs an additional check to ensure that the date supplied is not prior to today's date.

This code example requires that your Windows Forms project contains a Masked Text Box control named private void Form1_Load(object sender, Event Args e) void masked Text Box1_Type Validation Completed(object sender, Type Validation Event Args e) // Hide the tooltip if the user starts typing again before the five-second display limit on the tooltip expires.

Masked Text Box will only perform the check against The following code example attempts to parse the user's input as a valid Date Time.

If it fails, the Type Validation Completed event handler displays an error message to the user.

This mask can demand that the user enter eight digits, but cannot verify that the user enters month, date, and year values in the correct range; "12/20/2003" and "70/90/0000" are equally valid as far as the mask is concerned.

You can use to verify whether the data entered by the user falls within the correct range—in the previously mentioned case, by assigning it an instance of the Date Time type.

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You can force them to display symbols for another culture by using the A date (day, numeric month, year) in international date format.

The "/" character is a logical date separator, and will appear to the user as the date separator appropriate to the application's current culture. If users do not want to enter the optional characters, they can either enter spaces or place the mouse pointer directly at the position in the mask represented by the first 0.

The following code example attempts to parse the user's input as a valid Date Time.

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If it fails, the Type Validation Completed event handler displays an error message to the user.

When used with a zero-length mask, Masked Text Box behaves like a single-line Text Box control.