Decimal format in the textbox Text Change C# (1000000 -> 1,000,000)

nhanlaptrinh

Have you asked yourself in the currency format function TextChange how my example below the cursor does not focus on the No. 2 spot, the book help me thanks! if (textBox1.Text == "") return; else { int iIndex = textBox1.Text.IndexOf('.'); if (iIndex == -1) { } else { string strT = textBox1.Text.Substring(iIndex + 1, 1); if (textBox1.Text != "") { } } double a = double.Parse(textBox1.Text.Trim(',')); textBox1.Text = a.ToString("#,###"); }

OriginalGriff

Sorry, but that doesn't make much sense. When you post code, please use the code widget above the textbox - it preserves formatting which makes the whole thing more readable. I have reformatted your code, and also refactored it to make it more readable - taking out redundant conditions and so forth:

        if (textBox1.Text != "")
            {
            int iIndex = textBox1.Text.IndexOf('.');
            if (iIndex != -1)
                {
                string strT = textBox1.Text.Substring(iIndex + 1, 1);
                }
            double a = double.Parse(textBox1.Text.Trim(','));
            textBox1.Text = a.ToString("#,###");
            }

The trouble is that I have no idea what you are trying to do, so I also have no idea what problem you are trying to get help with! Please try to explain a bit better so we can help you.

Ideological Purity is no substitute for being able to stick your thumb down a pipe to stop the water

Bernhard Hiller

Not sure what you want to do. Perhaps:

int amount;
if (int.TryParse(textBox1.Text, out amount))
{
textBox1.Text=amount.ToString("#,###");
}

nhanlaptrinh

We now want to enter the number into the textbox, textbox itself decimal format and displays the time on that textbox. For example, enter "123456789", the textbox will appear as 123,456,789. I have a problem when entering a string from 1 to 9 are ok, but when inserting a number in the range from 1 to 9, the textbox back to position the cursor on the first position, thanks to your help with , thank you very much. Code I wrote

private void textBox1_TextChanged(object sender, EventArgs e)
{
try
{
if (textBox1.Text != "")
{
int iIndex = textBox1.Text.IndexOf('.');
if (iIndex != -1)
{
string strT = textBox1.Text.Substring(iIndex + 1, 1);
}
double a = double.Parse(textBox1.Text.Trim(','));
if (textBox1.SelectionStart >= textBox1.Text.Length)
{
textBox1.Text = a.ToString("#,###");
textBox1.SelectionStart = textBox1.Text.Length;
}
else
{
textBox1.Text = a.ToString("#,###");
//Help?
}
}
}
catch (Exception) { MessageBox.Show("Must enter the number ."); }
}

Bernhard Hiller

Do not use the TextChanged event, LostFocus or Validating are better.

PIEBALDconsult

Mightn't a NumericUpDown be what you want?

nhanlaptrinh

I think there are workarounds, but they have not thought out.

nhanlaptrinh

Have you no one has any solution to make stars? :(

nhanlaptrinh

This big forum who can solve the problem of your own?

nhanlaptrinh

Thanks for your interest in my question the last few days, now I have done the above issue then. :)