Based on the code and techniques,

private void btnTask4_Click(object sender, EventArgs e)

{

string s = "";

for (int r = 0; r

{

for (int j = 0; j

s += "*";

s += " ";

}

txtMultiLineOut.Text = s

}

generate a firstTriangle button that obtains the number of lines from txtIn and displays the following triangle in the txtMultipleLineOut assuming n=5.

* ** *** **** *****

Here's my code and it's output.

trols in this group. Drag an item o add it to the toolbox