Dear Experts
I have two textboxes
I want textbox1 to accept any character except 0 (zero)
When user enter 0 then it must not go to next control
I want textbox2 only accpet character "Y" or "N"
Please help
Dear Experts
I have two textboxes
I want textbox1 to accept any character except 0 (zero)
When user enter 0 then it must not go to next control
I want textbox2 only accpet character "Y" or "N"
Please help
Something like the following should work for you:
Private Sub TextBox1_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles TextBox1.KeyPress
e.Handled = e.KeyChar = CChar("0")
End Sub
Private Sub TextBox2_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles TextBox2.KeyPress
e.Handled = Not (e.KeyChar = CChar("Y") Or e.KeyChar = CChar("N"))
End Sub
You're going to also want to set the maximum characters on the second textbox to 1 so that only a Y or an N can be present, otherwise a user can type YNYYNN.
HTH.
Something like the following should work for you:
Private Sub TextBox1_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles TextBox1.KeyPress e.Handled = e.KeyChar = CChar("0") End Sub Private Sub TextBox2_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles TextBox2.KeyPress e.Handled = Not (e.KeyChar = CChar("Y") Or e.KeyChar = CChar("N")) End Sub
You're going to also want to set the maximum characters on the second textbox to 1 so that only a Y or an N can be present, otherwise a user can type YNYYNN.
HTH.
Dear Sir,
By using your codes:
Textbox1 does not allow 0 to write in it
0 shoud be displayed but focus must not go to other control.
I mean when user enter 0 then it should display 0 in it.
Textbox2 accepts only Y or N. BUT more that one time also accpets.
how to set format for only one character?
please modify
I misunderstood the 0 issue. There shouldn't be any code to allow the 0 key to be pressed.
If you only want Y and N, it may be better to use a combobox with only Y and N in the items collection. I don't know why I didn't think of that before, but that's most likely the better option. Also, the code I provided allows only a Y and N in the second text box (per your original request) and not y or n.
The following will allow the second text box to receive a Y,y,N,n and any control keys (like backspace).
Private Sub TextBox2_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles TextBox2.KeyPress
e.Handled = Not (e.KeyChar = CChar("Y") Or e.KeyChar = CChar("N") Or e.KeyChar = CChar("y") Or e.KeyChar = CChar("n")) And Not Char.IsControl(e.KeyChar)
End Sub
I misunderstood the 0 issue. There shouldn't be any code to allow the 0 key to be pressed.
If you only want Y and N, it may be better to use a combobox with only Y and N in the items collection. I don't know why I didn't think of that before, but that's most likely the better option. Also, the code I provided allows only a Y and N in the second text box (per your original request) and not y or n.
The following will allow the second text box to receive a Y,y,N,n and any control keys (like backspace).
Private Sub TextBox2_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles TextBox2.KeyPress e.Handled = Not (e.KeyChar = CChar("Y") Or e.KeyChar = CChar("N") Or e.KeyChar = CChar("y") Or e.KeyChar = CChar("n")) And Not Char.IsControl(e.KeyChar) End Sub
Dear Sir,
Textbox2 is still accepting character Y or N more than one time.
It must accept Y or N only once.
Dear Sir,
Textbox2 is still accepting character Y or N more than one time.
It must accept Y or N only once.
During the form load event, or in designer mode, ya need to set the maximum length to be 1.
TextBox2.MaximumLength = 1
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