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C# counting characters in textbox - tricky question

Posted on 2011-03-24
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Last Modified: 2012-05-11
Hi there;

I want to count the characters in the textbox but:

the count is just the result of the active cursor position. How can I do that?

abcd|efghijkl
So the count is 4 until/before cursor.

Note that this is for textbox.

Kind regards.
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Question by:jazzIIIlove
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8 Comments
 
LVL 1

Expert Comment

by:razza_b
ID: 35206071
why dont you use something like...

int xPos = textBox1.Cursor.HotSpot.X;
xPos = textBox1.Text.Length;
label = new label();
label.text = (string)xPos;
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LVL 52

Accepted Solution

by:
Carl Tawn earned 1000 total points
ID: 35206080
You just need to know the cursor position really, which you can get using:
int count = textBox1.SelectionStart;

Open in new window

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LVL 9

Expert Comment

by:Roman Gherman
ID: 35206142
Hi

 textBox1.Text.Length;

should be enough to get the character count
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LVL 52

Expert Comment

by:Carl Tawn
ID: 35206177
He's asking for the character count up to the current cursor position, not the length of the whole content.
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LVL 1

Expert Comment

by:razza_b
ID: 35206229
What about something like this??

if (e.KeyChar == '\'')
            {
                e.Handled = true;
                int start = textBox1.SelectionStart;
                string left = textBox1.Text.Substring(0, textBox1.SelectionStart);
                string right = textBox1.Text.Substring(start, textBox1.Text.Length - start);
                textBox1.Text = left + "\\\'" + right;
                textBox1.SelectionStart = start + 2;
               
            }
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LVL 12

Author Comment

by:jazzIIIlove
ID: 35208140
razza_b:
what is that backslash for?

Kind regards.
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LVL 1

Expert Comment

by:razza_b
ID: 35208346
sorry that was just something that someone used and i thougt you could modify it to suit your needs, you can use any check that you think would be useful in your code.....

if (textbox1.text != "")
{
      int start = textBox1.SelectionStart;
      string left = textBox1.Text.Substring(0, textBox1.SelectionStart);
      string right = textBox1.Text.Substring(start, textBox1.Text.Length - start);
      int findPos = (int)left + right;
      int pos = findPos;
      .......
}

try along the lines of that.
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LVL 1

Assisted Solution

by:razza_b
razza_b earned 1000 total points
ID: 35208433
in fact you just need...

if (textbox1.text != "")
{
      int start = textBox1.SelectionStart;
      string left = textBox1.Text.Substring(0, textBox1.SelectionStart);
      int pos = left ;
}
or as carl_tawn says : int count = textBox1.SelectionStart;


:)
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