You need to call uint.Parse():
uint i = uint.Parse(textBox1.Text,
System.Globalization.NumberStyles.AllowHexSpecifier);
Note that this method expects the plain number
- eg. "20" will convert to 32, while "0x20" will throw an exception
so you will want to check and strip off any leading "0x" first.
>Hi,
>
>I have a text box that excepts a hex value. How do I then convert to uint32
>to pass to an API?
>
>Below is a code snippet:
>
>private void button1_Click(object sender, System.EventArgs e)
> {
> if(this.textBox1.Text == "")
> {
> MessageBox.Show("You must enter an error
>code!", "Error",
> MessageBoxButtons.OK,
>MessageBoxIcon.Error);
> return;
> }
>
>
> int Rtnval;
> uint ErrorCode =
>Convert.ToUInt32(this.textBox1.Text);
> StringBuilder sMsg = new StringBuilder(256);
>
> const uint FORMAT_MESSAGE_FROM_SYSTEM = 0x00001000;
> const uint FORMAT_MESSAGE_IGNORE_INSERTS =
>0x00000200;
>
> Rtnval = FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM |
>FORMAT_MESSAGE_IGNORE_INSERTS,
> 0, ErrorCode, 0, sMsg, 256, 0);
>
> this.textBox2.Text = sMsg.ToString();
> }
>
>Any help will be much appreciated.
>
>Simon Powell
>
>
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