[RESOLVED] How to set Minimum character[HELP]

How would i set a minimum number of characters in textbox1 for a button to work. and if the person does not enter the minimum number of characters, a messagebox pops up sayin something like "need at least 5 characters!" Thanks

Set the button initially to disabled and try this:

vb.net Code:

Private Sub TextBox1_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles TextBox1.TextChanged
        Me.Button1.Enabled = (Me.TextBox1.Text.Length > 5)
    End Sub

A MessageBox coming up would be really annoying I think from a UI point of view. That said, you could make it so when they click the button it checks the textbox length and then shows the MessageBox.

Thx so much it worked !!! +rep

Quote:

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Originally Posted by x DeaDLy

How would i set a minimum number of characters in textbox1 for a button to work. and if the person does not enter the minimum number of characters, a messagebox pops up sayin something like "need at least 5 characters!" Thanks

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Quote:

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Originally Posted by ForumAccount

Set the button initially to disabled and try this:

vb.net Code:

Private Sub TextBox1_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles TextBox1.TextChanged
        Me.Button1.Enabled = (Me.TextBox1.Text.Length > 5)
    End Sub

A MessageBox coming up would be really annoying I think from a UI point of view. That said, you could make it so when they click the button it checks the textbox length and then shows the MessageBox.

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I agree with ForumAccount. The app that I'm currently working on has many of these cases where controls switch from Enabled to Disabled. I think it looks smart.

Quote:

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Originally Posted by x DeaDLy

Thx so much it worked !!! +rep

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Or

Code:

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if len(textbox1.text) < 5 Then
Button1.Enabled=false
Else
Button1.Enabled=True
End If

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