Example:
I have 1000 textboxes in 1 form. The textboxes names are textbox1, textbox2 ... textbox1000 I want to be able to do the following thing:

String myString = "textbox";
for (int i = 0; i <= 1000; i = i   1) 
myString   i.Text = "Textbox number "   i.ToString() 
next

IMPORTANT, solve my goal not my example

My goal is to not write the textbox, and get it from a predefined string, well, like the example

Sorry for the confusion and the edits. Its my first post :/

example 2, goal is the same

CodePudding user response：

This is case sensitive and assumes the control is on the form, not say a panel

string txt1 = "textBox1";
var textbox = Controls.OfType<TextBox>().FirstOrDefault(x => x.Name == txt1);
if (textbox != null)
{
    textbox.Text = "";
}

In a panel or group-box

var tb = Controls.Find(txt1, true);
if (tb.Length >0)
{
    ((TextBox)tb[0]).Text = "";
}

Then for 1-1000

for (int index = 0; index < 1000; index  )
{
    var textbox = Controls.OfType<TextBox>().FirstOrDefault(x => x.Name == $"textBox{index}");
    if (textbox != null)
    {
        textbox.Text = "";
    }
}

Edit

var baseText = "Textbox number ";
for (int index = 0; index < 1000; index  )
{
    var textBox = Controls.OfType<TextBox>().FirstOrDefault(x => x.Name == $"textBox{index}");
    if (textBox != null)
    {
        textBox.Text = $"{baseText}{index}";
    }
}

CodePudding user response：

I believe you want to edit the text in a Textbox. You can do like so:

string txt1 = Textbox1.Text;
txt1 = "(Edited Text)"   txt1;

And to change the text of Textbox at runtime, you can set the Text property of Textbox to that string.

Textbox1.Text = txt1;

Complete code, will then be:

string txt1 = Textbox1.Text;
txt1 = "(Edited Text)"   txt1;
Textbox1.Text = txt1;