| asp.NET开发中常用的25个小技巧 |
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发布时间:2008-04-08 发布人:
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1. 如何创建一个可改变大小没有标题栏的窗体?(How to create a form with resizing borders and no title bar?)
form1.Text = string. Empty; form1.ControlBox = false;
2. 如何在.NET的Windows窗体上启用XP主题集?(How to use XP Themes with Windows Forms using the .NET?)
确认你的控件中FlatStyle属性已经修改为System,再修改Main方法。
static void Main() { Application.EnableVisualStyles(); Application.DoEvents(); Application. Run(new Form1()); }
3. 如何为一个窗体设置一个默认按钮?(How to set the default button for a form?)
form1.AcceptButton = button1;
4. 如何为一个窗体设置一个取消按钮?(How to set the Cancel button for a form?)
form1.CancelButton = button1;
5. 如何阻止一个窗体标题显示在任务栏上?(How to prevent a form from being shown in the taskbar?)
设置窗体的ShowIntaskbar属性为False
6. 如何用现有可用字体绑定到ComboBox控件?(How to fill a ComboBox with the available fonts?)
comboBox1.Items.AddRange (FontFamily.Families);
7. 如何禁止TextBox控件默认的邮件菜单?(How to disable the default ContextMenu of a TextBox?)
textBox1.ContextMenu = new ContextMenu ();
8. 如何获取“我的文档”等一些系统文件夹路径?(How to get the path for "My Documents " and other system folders?)
Environment.SpecialFolder中包含了一些系统文件夹信息 MessageBox.Show(Environment.GetFolderPath( Environment.SpecialFolder.Personal ));
9. 如何获取应用程序当前执行的路径?(How to get the path to my running EXE?)
string appPath = Application.ExecutablePath;
10. 如何确定当前运行的系统?(How to determine which operating system is running?)
OperatingSystem os = Environment.OSVersion; MessageBox.Show(os.Version.ToString()); MessageBox.Show(os.Platform.ToString());
11. 如何从完整的路径中获取文件名?(How to get a file 's name from the complete path string?)
用System.IO.Path.GetFileName 和 System.IO.Path.GetFileNameWithoutExtension(无扩展名)的方法
12. 如何从完整的路径中获取文件扩展名?(How to get a file 's extension from the complete path string?)
用System.IO.Path.GetExtension方法
13. 如何使没有选择日期的DateTimePicker控件为空文本?(How to make the DateTimePicker show empty text if no date is selected?)
dateTimePicker1.CustomFormat = " "; dateTimePicker1.Format = DateTimePickerFormat.Custom;
14. 如何在Report Viewer中隐藏Crystal Report的状态栏?(How to hide the status bar of Crystal Report in Report Viewer?)
foreach(object obj in this.crystalReportViewer1.Controls) { if( obj.GetType()== typeof(System.Windows.Forms.StatusBar)) { StatusBar sBar=(StatusBar)obj; sBar.Visible=false; } }
15. 如何利用Crystal Report程序来生成PDF版本?(How to generate PDF version of Crystal Report programmatically?)
ReportDocument O_Report=new ReportDocument(); ExportOptions exportOpts = new ExportOptions(); PdfRtfWordFormatOptions pdfFormatOpts = new PdfRtfWordFormatOptions (); DiskFileDestinationOptions diskOpts = new DiskFileDestinationOptions(); exportOpts = O_Report.ExportOptions; // 设置PDF格式 exportOpts.ExportFormatType = ExportFormatType.PortableDocFormat; exportOpts.FormatOptions = pdfFormatOpts; // 设置文件选项和导出 exportOpts.ExportDestinationType = ExportDestinationType.DiskFile; diskOpts.DiskFileName = "C://Trial.pdf "; //设置PDF导出路径 exportOpts.DestinationOptions = diskOpts; O_Report.Export ();
16.通过代码如何输入多行文本?(How to enter multiline text in textbox through code? )
利用TextBox控件的LINES属性 string [] strAddress = { "Mukund Pujari ", "Global Transformation Technologies ", "Pune, India "}; textBox1.MultiLine=true; textBox1.Lines=strAddress;
或者 textBox1.Text= "Line 1\r\nLine2\r\nLine3. ";
或者 用 "System.Environment.NewLine "来替代换行符号
17. 如何在DataGrid中去掉CheckBox不确定状态?(How to remove the indeterminate status of checkbox in datagrid?)
DataGridTableStyle ts1 = new DataGridTableStyle(); //创建Table样式 ts1.MappingName = "Items "; //分配要应用样式的Data Table DataGridColumnStyle boolCol = new DataGridBoolColumn(); // 创建CheckBox列 boolCol.MappingName = "ch "; //分配数据列名称 boolCol.AllowNull=false; // 修改AllowNull属性
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