wpf中文本框只能输入整数
2021-05-30 14:18
标签：wpf ons || color ret lse oid turn txt wpf中文本框只能输入整数 标签：wpf ons || color ret lse oid turn txt 原文地址：https://www.cnblogs.com/DoNetCShap/p/11040714.html 1 private void txtBarCodeNum_KeyUp(object sender, KeyEventArgs e)
2 {
3 TxtInt(sender as TextBox);
4 }
5
6 private void txtBarCodeNum_TextChanged(object sender, TextChangedEventArgs e)
7 {
8 TxtInt(sender as TextBox);
9 }
10
11 private void TxtInt(TextBox txt)
12 {
13 if (txt==null || string.IsNullOrEmpty(txt.Text))
14 {
15 txt.Tag = "";
16 return;
17 }
18 try
19 {
20 txt.Text = txt.Text.Trim();
21 txt.Tag = Convert.ToInt32(txt.Text); ;
22 }
23 catch
24 {
25 if (txt.Tag==null)
26 {
27 txt.Text = "";
28 }
29 else
30 {
31 txt.Text = txt.Tag.ToString();
32 }
33 }
34 txt.SelectionStart = txt.Text.Length;
35 }
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