mytypefile.aspx.cs

ASP C#代码实例 适合初学人士学习使用

using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
using System.Configuration;
using System.Data.SqlClient;
using System.IO;

namespace Example_11_10
{
	/// <summary>
	/// Summary description for MyTypeFile.
	/// </summary>
	public class MyTypeFile : System.Web.UI.Page
	{
		protected System.Web.UI.WebControls.Label Message;
		protected System.Web.UI.HtmlControls.HtmlInputText MyFileName;
		protected System.Web.UI.HtmlControls.HtmlInputFile MyFile;
		protected System.Web.UI.HtmlControls.HtmlInputButton Submit1;	
		public static string SQLCONNECTIONSTRING = ConfigurationSettings.AppSettings["SQLCONNECTIONSTRING"].ToString();

		private void Page_Load(object sender, System.EventArgs e)
		{
			// Put user code to initialize the page here
		}

		public void UploadBtn_Click (Object sender, EventArgs e)
		{
			//得到提交的文件
			Stream fileDataStream = MyFile.PostedFile.InputStream;

			//得到文件大小
			int fileLength = MyFile.PostedFile.ContentLength;

			//创建数组
			byte[] fileData = new byte[fileLength];

			//把文件流填充到数组
			fileDataStream.Read(fileData,0,fileLength);

			//得到文件名字
			string fileTitle = MyFileName.Value;

			//得到文件类型
			string fileType = MyFile.PostedFile.ContentType;

			//构建数据库连接，SQL语句，创建参数
			String cmdText = "INSERT INTO Files (FileName,FileData,FileType)" + 
				"VALUES (@FileName,@FileData,@FileType)";
			SqlConnection myConnection = new SqlConnection(SQLCONNECTIONSTRING);
			SqlCommand myCommand = new SqlCommand(cmdText,myConnection);

			///添加数据库SQL语句的参数
			SqlParameter paramTitle = new SqlParameter ("@FileName", SqlDbType.VarChar,35); 
			paramTitle.Value = fileTitle;
			myCommand.Parameters.Add(paramTitle);

			SqlParameter paramData = new SqlParameter ("@FileData", SqlDbType.Image);
			paramData.Value = fileData;
			myCommand.Parameters.Add(paramData);

			SqlParameter paramType = new SqlParameter ("@FileType", SqlDbType.VarChar,25); 
			paramType.Value = fileType;
			myCommand.Parameters.Add(paramType);

			//打开连接，执行查询
			myConnection.Open();
			myCommand.ExecuteNonQuery();
			myConnection.Close();

			Message.Text="你的文件已经成功上载";
			MyFileName.Value = "";
		}


		#region Web Form Designer generated code
		override protected void OnInit(EventArgs e)
		{
			//
			// CODEGEN: This call is required by the ASP.NET Web Form Designer.
			//
			InitializeComponent();
			base.OnInit(e);
		}
		
		/// <summary>
		/// Required method for Designer support - do not modify
		/// the contents of this method with the code editor.
		/// </summary>
		private void InitializeComponent()
		{   
			this.Load += new System.EventHandler(this.Page_Load);

		}
		#endregion
	}
}