adjustwidth.aspx.cs

这是c#.net源代码

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.Data.SqlClient;
namespace MsDataGrid
{
	/// <summary>
	/// WebForm1 的摘要说明。
	/// </summary>
	public class AdjustWidth : System.Web.UI.Page
	{
		protected System.Web.UI.WebControls.DataGrid dgShow;
	
		private void Page_Load(object sender, System.EventArgs e)
		{
			// 在此处放置用户代码以初始化页面
			if(!IsPostBack)
				BindData();
			
		}
		private void BindData()
		{
			string strCon = System.Configuration.ConfigurationSettings.AppSettings["DSN"];
			SqlConnection con = new SqlConnection(strCon);
			SqlDataAdapter da = new SqlDataAdapter("Select * from tbStudentinfo",con);
			DataSet ds = new DataSet();
			da.Fill(ds,"studentinfo");
			dgShow.DataSource = ds.Tables["studentinfo"].DefaultView;
			dgShow.DataBind();
			dgShow.Columns[0].Visible = false;
			
		}
		#region Web Form Designer generated code
		override protected void OnInit(EventArgs e)
		{
			//
			// CODEGEN：该调用是 ASP.NET Web 窗体设计器所必需的。
			//
			InitializeComponent();
			base.OnInit(e);
		}
		
		/// <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.dgShow.PageIndexChanged += new System.Web.UI.WebControls.DataGridPageChangedEventHandler(this.dgShow_PageIndexChanged);
			this.dgShow.CancelCommand += new System.Web.UI.WebControls.DataGridCommandEventHandler(this.dgShow_CancelCommand);
			this.dgShow.EditCommand += new System.Web.UI.WebControls.DataGridCommandEventHandler(this.dgShow_EditCommand);
			this.dgShow.UpdateCommand += new System.Web.UI.WebControls.DataGridCommandEventHandler(this.dgShow_UpdateCommand);
			this.dgShow.DeleteCommand += new System.Web.UI.WebControls.DataGridCommandEventHandler(this.dgShow_DeleteCommand);
			this.dgShow.ItemDataBound += new System.Web.UI.WebControls.DataGridItemEventHandler(this.dgShow_ItemDataBound);
			this.Load += new System.EventHandler(this.Page_Load);

		}
		#endregion

		private void dgShow_EditCommand(object source, System.Web.UI.WebControls.DataGridCommandEventArgs e)
		{
			dgShow.EditItemIndex = e.Item.ItemIndex;
			BindData();

		}
	
		private void dgShow_CancelCommand(object source, System.Web.UI.WebControls.DataGridCommandEventArgs e)
		{
			dgShow.EditItemIndex = -1;
			BindData();
		}
		private void dgShow_PageIndexChanged(object source, System.Web.UI.WebControls.DataGridPageChangedEventArgs e)
		{
			dgShow.CurrentPageIndex = e.NewPageIndex;
			BindData();
		}
		private void dgShow_DeleteCommand(object source, System.Web.UI.WebControls.DataGridCommandEventArgs e)
		{
			if(dgShow.Items.Count==1)
			{
				if(dgShow.CurrentPageIndex!=0)
					dgShow.CurrentPageIndex = dgShow.CurrentPageIndex-1;
			}
			string strSql = "delete from tbStudentinfo where studentid="+e.Item.Cells[0].Text+"";
			ExecuteSql(strSql);
			BindData();

		}
		////////////////////////////////////////////////////////////
		//说明：执行制定SQL语句/////////////////////////////////////
		///////////////////////////////////////////////////////////
		private void ExecuteSql(string strSql)
		{
			try
			{
				string strconn = System.Configuration.ConfigurationSettings.AppSettings["DSN"];//从Web.config中读取
				SqlConnection conn =new SqlConnection(strconn);
				SqlCommand com = new SqlCommand(strSql,conn);
				conn.Open();
				com.ExecuteNonQuery();
				conn.Close();
			} 
			catch(Exception e)
			{
				Response.Write("<script language = 'javascript'>alert('"+e.Message+"');</script>") ;
							
			}
		}
		
		private void dgShow_UpdateCommand(object source, System.Web.UI.WebControls.DataGridCommandEventArgs e)
		{
			string strStudentID = e.Item.Cells[0].Text;//处于非编辑状态
			string strName = ((TextBox)(e.Item.Cells[1].Controls[0])).Text;//处于编辑状态
			string strPass =((TextBox)(e.Item.Cells[2].Controls[0])).Text;
			string strSex = ((CheckBox)(e.Item.Cells[3].FindControl("cbSex"))).Checked?"1":"0";
			string strBirthday =((TextBox)(e.Item.Cells[4].Controls[0])).Text;
			string strEmail =((TextBox)(e.Item.Cells[5].Controls[0])).Text;
			string strSql = "update tbStudentinfo set StudentName='"+strName+"',StudentPass='"+strPass+"'";
			strSql +=",Sex="+strSex+",Birthday='"+strBirthday+"',Email='"+strEmail+"' where studentid="+strStudentID+"";
			ExecuteSql(strSql);
			dgShow.EditItemIndex = -1;
			BindData();

		}

		private void dgShow_ItemDataBound(object sender, System.Web.UI.WebControls.DataGridItemEventArgs e)
		{
			if (e.Item.ItemType == ListItemType.EditItem) 
			{
				for (int i=0;i<e.Item.Cells.Count;i++)
				{
					if(e.Item.Cells[i].Controls.Count>0)
					{
						try
						{
							TextBox t =(TextBox)e.Item.Cells[i].Controls[0];
							t.Width=130;
						}
						catch(Exception ee)
						{
						}
					}
				}
			}
		}

	}
}