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Two TextBox GotFocus() got recursive.
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Hi,
 
I have been working on Windows Mobile Forms. I have a windows mobile application form with two textbox.
 
1. Both textbox value is mandatory.
2. At edit mode, if TextBox1 is focused and made empty and then user navigate to TextBox2 then there a message need to be shown "Value in TextBox1 is mandatory" and control needs to focus back on TextBox1.
3. Similarly if TextBox1 is filled and focus is shifted to TextBox2 and if user places focus to any other place on form except TextBox1 and TextBox2 then TextBox2 should be focused and a message to be shown as "Value in TextBox1 is mandatory"
 
But while implemeting this with TextBox1_GotFocus() and TextBox2_GotFocus() I got exception as the call becomes recursive and a stackoverflow exception is thrown.
 
How could I get over this. Any help is appreciated.
Posted 19 Jun '12 - 22:56
Arindam Tewary5.3K
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2 solutions

you can simply make TextBox1& TextBox2 Mandatory
i.e this.TextBox1.Imandatory=true;
this.TextBox2.Ismandatory=true;
 

for validation you can use:
if(string.Isnullorempty(TextBox1.Text)||string.Isnullorempty(Textbox2.Text))
{
this.GetDialogBox().Show(this, CustomDialogBox.DialogBoxType.OkDialog, "you can add you own comment");
this.texBox1.focus();
}
 
Please look for busines.
Smile | :)
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Posted 19 Jun '12 - 23:44
Dinesh Singh Kunwar381
You need to validate the data entry at the time of lost focus of textboxes instead of checking the data entered after focus on other control.
 
Try onBlur event of textbox to check data validation and re-focus on failure.
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Posted 19 Jun '12 - 23:46
Sandeep Mewara473K
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