Question

C# 关于合并一个句子private void txb1_Leave_1(object sender,EventArgs

Answer 1

public Form1()

{

InitializeComponent();

txb1.Leave += new EventHandler(txb_Leave);

txb2.Leave += new EventHandler(txb_Leave);

}private void txb_Leave(object sender, EventArgs e)

{

int i = 0;

TextBox tb = (TextBox)sender;

if (!int.TryParse(tb.Text, out i))

{

MessageBox.Show("你输入的不是正确的数字");

//txtNum1.SelectAll();

tb.Text = cur;

tb.Focus();

}

}