摘要：提要：我在SQL Server 中新建用户登录时，出现了三种错误，错误代码分别是 18456、15128、4064-----------------------------------正 文-----------------------------------一、实验环境Windows 7SQL S... 阅读全文

摘要：using System.Windows.Controls;namespace test{ public class MacTextBox : TextBox { private string _lastText = ""; protected overrid... 阅读全文

摘要：个人理解：as跟isis 相当于判断里的“==” 是与否if(e.OriginalSource is Button)as 一般用来转换另一种objecte.OriginalSource as Button来获取相关属性或值e.OriginalSource as RadioButton).Name.T... 阅读全文

摘要：private void dataGrid_MouseRightButtonDown(object sender, MouseButtonEventArgs e) { ContextMenu context = new ContextMenu(); ... 阅读全文

摘要：引用using Shell32; private void Open_Click(object sender, RoutedEventArgs e) { OpenFileDialog ofd = new OpenFileDialog(); ... 阅读全文

摘要：private void Button_Click(object sender, RoutedEventArgs e) { Popup1.PlacementTarget = TesTextBox; Popup1.Placeme... 阅读全文