TextChanged Event of NumericUpDown

Question

I am using Microsoft Visual C# 2010 Express. When i change the value of numericUpDown using arrows, my button becomes enable. But i also want to enable my button when i change the value of numericUpDown by changing the text directly. I am using the following code: ``` private void numericUpDown1_ValueChanged(object sender, EventArgs e) { button1.Enabled = true; } ```

Accepted Answer

You may need to use TextChanged event instead of using `ValueChanged`. The Value changed event need you to press enter key after changing value to get ValueChanged fired.

What MSDN say about `NumericUpDown.ValueChanged` Event

For the ValueChanged event to occur, the Value property can be changed in code, by clicking the up or down button, or by the user entering a new value that is read by the control. The new value is read when the user hits the ENTER key or navigates away from the control. If the user enters a new value and then clicks the up or down button, the ValueChanged event will occur twice, MSDN.

Binding TextChanged event.

```
private void TestForm_Load(object sender, EventArgs e)
{
    numericUpDown1.TextChanged += new EventHandler(numericUpDown1_TextChanged);
}
```

Declaration of TextChanged event.

```
void numericUpDown1_TextChanged(object sender, EventArgs e)
{
    button1.Enabled = true;
}
```

TextChanged Event of NumericUpDown

Solution

Problem