Validate user input on the device application by assigning validation rules to the edit box control.
Rule validation is supported only for the edit box control.
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In the Device Application Designer, select .
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Drag and drop the Edit Box onto the screen display.
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In the view for the edit box, select the data type from the Data type list.
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In the Palette, drag and drop Rule Validation onto the edit box.
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In the rule dialog, configure the validation rule and click OK.