c# winform 简单的执行卡死!未响应
用C#写的winform,只有一点简单的代码,但是执行起来卡死!直接未响应了!求帮助!
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
string str1 = textBox1.Text;
string str2 = textBox2.Text;
int i1, i2;
if (int.TryParse(str1, out i1)==false)
{
MessageBox.Show("错误");
return;
}
if (int.TryParse(str2, out i2)==false)
{
MessageBox.Show("错误");
return;
}
if (i1 >= i2)
{
MessageBox.Show("zhicuowu");
return;
}
int sum = 0;
for (int i = i1;i1 <= i2;i++)
{
sum = sum + i;
}
textBox3.Text = Convert.ToString(sum);
}
private void button2_Click(object sender, EventArgs e)
{
Application.Exit();
}
}