Converting string to int in c#

Converting string to int is simple in c#. There are two comman ways 

to convert string to int.

• Convert.ToInt32
• Int32.TryParse

 Here is the screen shot of our string to int converter sample application:

Note that our integer number must be between −2,147,483,648 and +2,147,483,647 range.
The c# source code to convert string to integer

private void btnConvert_Click(object sender, EventArgs e)
{
int numValue = 0;
string strValue = string.Empty;

strValue = tbInput.Text.Trim();

try
{
numValue = Convert.ToInt32(strValue);
lblResult.Text = numValue.ToString();
}
catch (Exception exc)
{
tbInput.Text = string.Empty;
lblResult.Text = string.Empty;
MessageBox.Show("Error occured:" + exc.Message);
}
}       

private void btnTryParse_Click(object sender, EventArgs e)
{
ConvertToIntTryParse();
}

private void ConvertToIntTryParse()
{
int numValue = 0;
bool result = Int32.TryParse(tbInput.Text, out numValue);
if (true == result)
lblResult.Text = numValue.ToString();
else
MessageBox.Show("Cannot parse string as int number");
}