form1.cs

C#150例

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;

namespace Example111_使用保存文件对话框
{
	/// <summary>
	/// Form1 的摘要说明。
	/// </summary>
	public class Form1 : System.Windows.Forms.Form
	{
		private System.Windows.Forms.Button button1;
		private System.Windows.Forms.RichTextBox richTextBox1;
		private System.Windows.Forms.SaveFileDialog saveFileDialog1;
		/// <summary>
		/// 必需的设计器变量。
		/// </summary>
		private System.ComponentModel.Container components = null;

		public Form1()
		{
			//
			// Windows 窗体设计器支持所必需的
			//
			InitializeComponent();

			//
			// TODO: 在 InitializeComponent 调用后添加任何构造函数代码
			//
		}

		/// <summary>
		/// 清理所有正在使用的资源。
		/// </summary>
		protected override void Dispose( bool disposing )
		{
			if( disposing )
			{
				if (components != null) 
				{
					components.Dispose();
				}
			}
			base.Dispose( disposing );
		}

		#region Windows Form Designer generated code
		/// <summary>
		/// 设计器支持所需的方法 - 不要使用代码编辑器修改
		/// 此方法的内容。
		/// </summary>
		private void InitializeComponent()
		{
			this.button1 = new System.Windows.Forms.Button();
			this.richTextBox1 = new System.Windows.Forms.RichTextBox();
			this.saveFileDialog1 = new System.Windows.Forms.SaveFileDialog();
			this.SuspendLayout();
			// 
			// button1
			// 
			this.button1.Location = new System.Drawing.Point(192, 224);
			this.button1.Name = "button1";
			this.button1.TabIndex = 0;
			this.button1.Text = "保存文件";
			this.button1.Click += new System.EventHandler(this.button1_Click);
			// 
			// richTextBox1
			// 
			this.richTextBox1.Location = new System.Drawing.Point(16, 16);
			this.richTextBox1.Name = "richTextBox1";
			this.richTextBox1.Size = new System.Drawing.Size(256, 200);
			this.richTextBox1.TabIndex = 1;
			this.richTextBox1.Text = "";
			// 
			// saveFileDialog1
			// 
			this.saveFileDialog1.FileName = "doc1";
			// 
			// Form1
			// 
			this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
			this.ClientSize = new System.Drawing.Size(292, 253);
			this.Controls.AddRange(new System.Windows.Forms.Control[] {
																		  this.richTextBox1,
																		  this.button1});
			this.Name = "Form1";
			this.Text = "Form1";
			this.ResumeLayout(false);

		}
		#endregion

		/// <summary>
		/// 应用程序的主入口点。
		/// </summary>
		[STAThread]
		static void Main() 
		{
			Application.Run(new Form1());
		}

		private void button1_Click(object sender, System.EventArgs e)
		{
			saveFileDialog1.AddExtension = true;
			saveFileDialog1.DefaultExt = "rtf";
			saveFileDialog1.CheckPathExists = true;
			saveFileDialog1.Filter = "RTF格式文件(*.rtf)|*.rtf";
			saveFileDialog1.OverwritePrompt = true;
			if ((this.saveFileDialog1.ShowDialog()==DialogResult.OK)
				&(saveFileDialog1.FileName.Length > 0))
			{
				this.richTextBox1.SaveFile(this.saveFileDialog1.FileName); 
			}

		}
	}
}