Pass a targeted method as a parameter

Question

first of all, my english is not very good so if you could be kind it would be appreciated. Thanks.

Now my problem, like I said in the title, I would like to pass a "method name" as a parameter in another method. Like a picture is worth thousand words, there is a chunk of my function:

 public void RemoveDecimalPoints(TextBox txtBoxName, Func<string, TextBox> txtBoxMethod) { //Some Code txtBoxName.KeyPress += new KeyPressEventHandler(txtBoxMethod); }

I want the second parameter to point to this other method:

 private void txtIncomeSelfValue1_KeyPress(object sender, KeyPressEventArgs e) { //Some Code }

Sorry if im not clear for some, I lack some vocabulary...

Thanks for your help.

Darin Dimitrov · Accepted Answer · 2011-09-25 10:08:18Z

Assuming you are calling this RemoveDecimalPoints method from the same class that contains the txtIncomeSelfValue1_KeyPress method you could pass it like this:

RemoveDecimalPoints(someTextBox, this.txtIncomeSelfValue1_KeyPress);

but you will have to modify the signature as Func<string, TextBox> doesn't match the txtIncomeSelfValue1_KeyPress method:

public void RemoveDecimalPoints(TextBox txtBoxName, KeyPressEventHandler txtBoxMethod) { //Some Code txtBoxName.KeyPress += txtBoxMethod; }

had to give you an upvote - your answer was (independently) almost exactly the same as mine. :-)
Tanks for your help! I tried that but not the good way, in txtBoxName.KeyPress += txtBoxMethod; I was using txtIncomeSelfValue1.KeyPress += new KeyPressEventHandler(txtBoxMethod); I was close! lol ^^

Enigmativity · Accepted Answer · 2011-09-25 10:13:12Z

If you're happy to write your code like this:

RemoveDecimalPoints(txtBoxName, txtIncomeSelfValue1_KeyPress);

then you can use:

public void RemoveDecimalPoints( TextBox txtBoxName, KeyPressEventHandler txtBoxMethod) { //Some Code txtBoxName.KeyPress += txtBoxMethod; }

If you want to use a string then you need to use reflection and your signature would need to look like this:

void RemoveDecimalPoints(TextBox txtBoxName, string txtBoxMethod)

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