CODEWITHSUNDEEP
c#.netvisual-studiotextbox
Sakkle
Sakkle

Reputation: 1944

Setting the contents of a textBox to upper-case on CurrentItemChanged

I would like the text in my textBox to be set to upper-case whenever currentItemChanged is triggered. In other words, whenever the text in the box changes I'd like to make the contents upper-case. Here is my code:

private void rootBindingSource_CurrentItemChanged(object sender, System.EventArgs e)
{
    toUserTextBox.Text.ToUpper();
    readWriteAuthorization1.ResetControlAuthorization();
}

The event triggers for sure, I've tested with a messageBox. So I know I've done something wrong here... the question is what.

Upvotes: 1

Views: 16854

Answers (3)

John Myczek
John Myczek

Reputation: 12256

If all you need to do is force the input to upper case, try the CharacterCasing property of the textbox.

toUserTextBox.CharacterCasing = CharacterCasing.Upper;

Upvotes: 24

Romias
Romias

Reputation: 14133

I imagine that your question is Why your code is not working.

You are not assigning the "Uppered" text to the textbox again.

Should be:

private void rootBindingSource_CurrentItemChanged(object sender, System.EventArgs e)
{
    toUserTextBox.Text = toUserTextBox.Text.ToUpper();
    readWriteAuthorization1.ResetControlAuthorization();
}

Upvotes: 3

BFree
BFree

Reputation: 103740

Strings are immutable. ToUpper() returns a new string. Try this:

private void rootBindingSource_CurrentItemChanged(object sender, System.EventArgs e)
{
    toUserTextBox.Text = toUserTextBox.Text.ToUpper();
    readWriteAuthorization1.ResetControlAuthorization();
}

Upvotes: 5

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