WPF Forms - how to add text placeholder on textbox

Question

I am very new to WPF and C# in general. I am trying to add a textholder on my textbox, when you focus on the textbox, i want the text to disappear, and if I move to something else (aka loses focus), and the text is empty, i want the textbox to add the text I want the text back.

but I get error on GotFocus.EventHandle(RemoveText); and LostFocus.EventHandle(AddText); on the words "GotFocus" and "Lostfocus" (on the code below)

what am I missing?

I tried this next code:

ExcelPath.Text = "Please Drag Excel into here";
ExcelPath.GotFocus += GotFocus.EventHandle(RemoveText);
ExcelPath.LostFocus += LostFocus.EventHandle(AddText);

public void RemoveText(object sender, EventArgs e)
{
    if (ExcelPath.Text == "Please Drag Excel into here")
    {
        ExcelPath.Text = "";
    }
}

public void AddText(object sender, EventArgs e)
{
    if (string.IsNullOrWhiteSpace(ExcelPath.Text))
        ExcelPath.Text = "Please Drag Excel into here";
}

score 3 · Accepted Answer · answered May 17 '21 at 15:34

3

This is the syntax for hooking up the event handlers:

ExcelPath.Text = "Please Drag Excel into here";
ExcelPath.GotFocus += RemoveText;
ExcelPath.LostFocus += AddText;

Get rid of GotFocus.EventHandle whatever that is.

answered May 17 '21 at 15:34

mm8

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i actually tried that and it didn't work :( . – oded gross May 18 '21 at 07:48
Also I the GotFocus.EventHandle because when i was searching for answer, many gave that answer with GotFocus.EventHandle so i tried it... but it didnt work. – oded gross May 18 '21 at 07:54
What does "didn't work" mean? What happens? – mm8 May 18 '21 at 11:35
Hello, today i came with a renew power after banging my head to much yeterday, it actually worked, i just did something stupid because i guess i was tired. it worked, thank you so much for the help! – oded gross May 18 '21 at 14:03

score 0 · Answer 2 · answered May 17 '21 at 12:32

0

You can do that with a watermark textbox. You find a lot of it in the internet. For example here: Watermark / hint text / placeholder TextBox

Or this is also very helpful: Create WPF Watermark in Pure XAML

With this help-links you do not have to try everything by urself.

answered May 17 '21 at 12:32

Presi

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its useful, but its mainly XAML in WPF which is a problem for me, I just wanted it code wise on Forms, and if Forms have XAML i dunno actually where its (as i said i am new, i only saw XAML when i use main window but i dont use it at all) – oded gross May 18 '21 at 07:50

WPF Forms - how to add text placeholder on textbox

2 Answers2