C sharp - How to add precision to textboxes values at runtime with numericUpDown control

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.NET3.0

I have 5- 10 nos of textboxes on the form with some values..
and a numericUpDown control..
i have to add precision to textbox values according to numericupdown control..
for eg.
if numericupdown control value is 1 then textbox value should be like 105.0
or if numericupdown control value is 2 then textbox value should be like 105.00

this would happen at runtime, when i change the value of numericUpDown control value of textbox also change with precision...
thnxxxx

Posted 10-Feb-11 3:02am

Legendof507

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Richard MacCutchan · Accepted Answer · 2011-02-10T03:05:00

Solution 1

Use the String::Format()[^] method with the appropriate precision settings.

Posted 10-Feb-11 3:05am

Richard MacCutchan

Olivier Levrey · Accepted Answer · 2011-02-10T03:09:00

Solution 2

C#

private void NumericUpDown1_ValueChanged(Object sender, EventArgs e)
{
    int numberOfDecimals = (int)yourNumericUpDown.Value;
    yourTextBox.Text = yourValue.ToSring("F" + numberOfDecimals.ToString());
}

Posted 10-Feb-11 3:09am

Olivier Levrey

Legendof507 · Accepted Answer · 2011-02-10T03:20:00

C#

private void NumericUpDown1_ValueChanged(Object sender, EventArgs e)
{
    int numberOfDecimals = (int)yourNumericUpDown.Value;
    yourTextBox.Text = yourValue.ToSring("F" + numberOfDecimals.ToString());
}

thnx for ur solution
But I have to add precision to all textboxes at the same time....

Olivier Levrey · Accepted Answer · 2011-02-10T03:44:00

Then you probably want something like that:

private void NumericUpDown1_ValueChanged(Object sender, EventArgs e)
{
    UpdateTextBoxes();
}
//you can call this from anywhere at anytime to update every text boxes
public void UpdateTextBoxes()
{
    int numberOfDecimals = (int)yourNumericUpDown.Value;
    string formatString = "F" + numberOfDecimals.ToString();
    textBox1.Text = yourValue1.ToSring(formatString);
    textBox2.Text = yourValue2.ToSring(formatString);
    textBox3.Text = yourValue3.ToSring(formatString);
    //... do as many as you want
}

C sharp - How to add precision to textboxes values at runtime with numericUpDown control

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