如何改为try-catch-catch-finally

Question

            if (!validateNum(textBox1.Text.Trim()))
            {                errorP.SetError(textBox1,"wrong!");
                errorP2.Clear(); 
            }
            else if (!validateNum(textBox2.Text.Trim()))
            {
                errorP2.SetError(textBox2, "wrong!");
                errorP.Clear();
            }
            else
            {
                errorP2.Clear();
                errorP.Clear();
            }
如何改为try-catch-catch-finally.

Answer 1

try
{  
if (!validateNum(textBox1.Text.Trim())) 
            {                 errorP.SetError(textBox1,"wrong!"); 
                errorP2.Clear(); 
            } 
            else if (!validateNum(textBox2.Text.Trim())) 
            { 
                errorP2.SetError(textBox2, "wrong!"); 
                errorP.Clear(); 
            } 
            else 
            { 
                errorP2.Clear(); 
                errorP.Clear(); 
            } }
catch
{
}
finally{}