FormView 添加,删除,修改,分页

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using System; using System.Data; using System.Configuration; using System.Collections; using System.Web; using System.Web.Security; using System.Web.UI; using System.Web.UI.WebControls; using System.Web.UI.WebControls.WebParts; using System.Web.UI.HtmlControls; using System.Data.OleDb;   namespace sitemapdemo {     /// <summary>     /// 2011-03-24     /// 涂聚文     /// </summary>     public partial class FormViewDemo : System.Web.UI.Page     {         string GalleryID = string.Empty;         string GalleryName = string.Empty;         string Picture = string.Empty;         /// <summary>         ///         /// </summary>         /// <param name="sender"></param>         /// <param name="e"></param>         protected void Page_Load(object sender, EventArgs e)         {             Page.Title = "FormView 添加,删除,修改,分页";             if (!Page.IsPostBack)             {                 BindData();             }         }         /// <summary>         /// 绑定         /// </summary>         /// <param name="sender"></param>         /// <param name="e"></param>         protected void myFormView_DataBound(object sender, EventArgs e)         {             //*** Image ***//             Image Image1 = (Image)(myFormView.FindControl("Image1"));             if (Image1 != null)             {                 Image1.ImageUrl = "images/" + (string)DataBinder.Eval(myFormView.DataItem, "Picture");                 Image1.Attributes.Add("OnClick", "window.open('images/" + (string)DataBinder.Eval(myFormView.DataItem, "Picture") + "')");                 Image1.Style.Add("cursor", "hand");                 Image1.ToolTip = (string)DataBinder.Eval(myFormView.DataItem, "GalleryName");             }               //*** GalleryName ***//             Label lblGalleryName = (Label)(myFormView.FindControl("lblGalleryName"));             if (lblGalleryName != null)             {                 lblGalleryName.Text = (string)DataBinder.Eval(myFormView.DataItem, "GalleryName");             }             //Label lblGalleryID = (Label)(myFormView.FindControl("lblGalleryID"));             //if (lblGalleryID != null)             //{             //    lblGalleryID.Text = (string)DataBinder.Eval(myFormView.DataItem, "GalleryID");             //}                       }         /// <summary>         /// 显示分页         /// </summary>         /// <param name="sender"></param>         /// <param name="e"></param>         protected void ShowPageCommand(object sender, FormViewPageEventArgs e)         {             myFormView.PageIndex = e.NewPageIndex;             BindData();         }         /// <summary>         ///         /// </summary>         void BindData()         {             DataTable dt;               //*** DataSet To DataTable ***//             dt = CreateDsToDt();               //*** DataTable ***//             //dt = CreateDataTable();               //*** DataSet ***//             //DataSet ds;             //ds = CreateDataSet();             //dt = ds.Tables[0]; //*** Convert DataSet to DataTable ***//               //*** TableRows ***//             //dt = DataTableRows();               //*** BindData to FormView ***//             myFormView.DataSource = dt;             myFormView.DataBind();         }           /// <summary>         /// //*** DataTable ***//         /// </summary>         /// <returns></returns>         protected DataTable CreateDataTable()         {             System.Data.OleDb.OleDbConnection objConn = new System.Data.OleDb.OleDbConnection();             System.Data.OleDb.OleDbDataAdapter dtAdapter = new System.Data.OleDb.OleDbDataAdapter();             DataTable dt = new DataTable();                 String strConnString;             strConnString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" +             Server.MapPath("~/App_Data/db1.mdb") + ";Jet OLEDB:Database Password=;";             objConn = new System.Data.OleDb.OleDbConnection(strConnString);             objConn.Open();               String strSQL;             strSQL = "SELECT * FROM gallery";               dtAdapter = new System.Data.OleDb.OleDbDataAdapter(strSQL, objConn);             dtAdapter.Fill(dt);               dtAdapter = null;               objConn.Close();             objConn = null;               return dt; //*** Return DataTable ***//           }           /// <summary>         /// //*** DataSet ***//         /// </summary>         /// <returns></returns>         protected DataSet CreateDataSet()         {             System.Data.OleDb.OleDbConnection objConn = new System.Data.OleDb.OleDbConnection();             System.Data.OleDb.OleDbCommand objCmd = new System.Data.OleDb.OleDbCommand();             System.Data.OleDb.OleDbDataAdapter dtAdapter = new System.Data.OleDb.OleDbDataAdapter();               DataSet ds = new DataSet();             String strConnString, strSQL;               strConnString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" +             Server.MapPath("~/App_Data/db1.mdb") + ";Jet OLEDB:Database Password=;";               strSQL = "SELECT * FROM gallery ";             objConn.ConnectionString = strConnString;               objCmd.Connection = objConn;             objCmd.CommandText = strSQL;             objCmd.CommandType = CommandType.Text;               dtAdapter.SelectCommand = objCmd;               dtAdapter.Fill(ds);               dtAdapter = null;             objConn.Close();             objConn = null;               return ds;   //*** Return DataSet ***//           }             /// <summary>         /// //*** DataSet to DataTable ***//         /// </summary>         /// <returns></returns>         protected DataTable CreateDsToDt()         {             //ViewState["tmp"] = tmp; //创建数据池             System.Data.OleDb.OleDbConnection objConn = new System.Data.OleDb.OleDbConnection();             System.Data.OleDb.OleDbCommand objCmd = new System.Data.OleDb.OleDbCommand();             System.Data.OleDb.OleDbDataAdapter dtAdapter = new System.Data.OleDb.OleDbDataAdapter();               DataSet ds = new DataSet();             DataTable dt;             String strConnString, strSQL;                 strConnString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" +             Server.MapPath("~/App_Data/db1.mdb") + ";Jet OLEDB:Database Password=;";             strSQL = "SELECT * FROM gallery";               objConn.ConnectionString = strConnString;               objCmd.Connection = objConn;             objCmd.CommandText = strSQL;             objCmd.CommandType = CommandType.Text;               dtAdapter.SelectCommand = objCmd;               dtAdapter.Fill(ds);             dt = ds.Tables[0];               dtAdapter = null;             objConn.Close();             objConn = null;               return dt;   //*** Return DataTable ***//           }                  /// <summary>         ///*** TableRows (DataTable) ***         /// </summary>         /// <returns></returns>         protected DataTable DataTableRows()         {             DataTable dt = new DataTable();             DataRow dr;               //*** Column ***//             dt.Columns.Add("GalleryID");             dt.Columns.Add("GalleryName");             dt.Columns.Add("Picture");               //*** Rows ***//             dr = dt.NewRow();             dr["GalleryID"] = "1";             dr["GalleryName"] = "My Picture 1";             dr["Picture"] = "1.jpg";             dt.Rows.Add(dr);               //*** Rows ***//             dr = dt.NewRow();             dr["GalleryID"] = "2";             dr["GalleryName"] = "My Picture 2";             dr["Picture"] = "2.jpg";             dt.Rows.Add(dr);               //*** Rows ***//             dr = dt.NewRow();             dr["GalleryID"] = "3";             dr["GalleryName"] = "My Picture 3";             dr["Picture"] = "1.jpg";             dt.Rows.Add(dr);               //*** Rows ***//             dr = dt.NewRow();             dr["GalleryID"] = "4";             dr["GalleryName"] = "My Picture 4";             dr["Picture"] = "2.jpg";             dt.Rows.Add(dr);               return dt; //*** Return DataTable ***//           }         /// <summary>         /// 选择操作状态         /// </summary>         /// <param name="sender"></param>         /// <param name="e"></param>         protected void myFormView_ModeChanging(object sender, FormViewModeEventArgs e)         {             //判断模式             if (e.NewMode == FormViewMode.Insert)             {                 myFormView.ChangeMode(FormViewMode.Insert);             }             else if (e.NewMode == FormViewMode.Edit)             {                 myFormView.ChangeMode(FormViewMode.Edit);             }             else if (e.CancelingEdit)             {                 myFormView.ChangeMode(FormViewMode.ReadOnly);             }             BindData();         }         /// <summary>         /// 修改         /// </summary>         /// <param name="sender"></param>         /// <param name="e"></param>         protected void myFormView_ItemUpdating(object sender, FormViewUpdateEventArgs e)         {             GalleryID = ((Label)this.myFormView.FindControl("Label1")).Text;             GalleryName = ((TextBox)this.myFormView.FindControl("EditGalleryNameTextBox")).Text.Trim();             Picture = ((TextBox)this.myFormView.FindControl("EditPictureTextBox")).Text.Trim();             Response.Write(" " + GalleryID + " " + GalleryName + " " + Picture);               //Label lbl_no = (Label)this.FormView1.FindControl("Label1");             //TextBox TextBox1 = (TextBox)this.FormView1.FindControl("TextBox1");             //TextBox TextBox2 = (TextBox)this.FormView1.FindControl("TextBox2");             //TextBox TextBox3 = (TextBox)this.FormView1.FindControl("TextBox3");             //TextBox TextBox4 = (TextBox)this.FormView1.FindControl("TextBox4");             //DataTable temp = BindData();             //DataRow dr = temp.Select("id=" + lbl_no.Text + " and mid=" + ViewState["DataKey"].ToString())[0];             //dr["nr"] = TextBox1.Text;             //dr["czr"] = TextBox2.Text;             //dr["cs"] = TextBox3.Text;             //dr["rq"] = TextBox4.Text;               //ViewState["temp"] = temp;//覆盖数据池               //myFormView.ChangeMode(FormViewMode.ReadOnly);             //BindData();         }         /// <summary>         /// 添加         /// </summary>         /// <param name="sender"></param>         /// <param name="e"></param>         protected void myFormView_ItemInserting(object sender, FormViewInsertEventArgs e)         {             GalleryName = ((TextBox)this.myFormView.FindControl("InsertGalleryNameTextBox")).Text.Trim();             Picture = ((TextBox)this.myFormView.FindControl("InsertPictureTextBox")).Text.Trim();             Response.Write(" " + GalleryID + " " + GalleryName + " " + Picture);             //myFormView.ChangeMode(FormViewMode.ReadOnly);             //BindData();         }         /// <summary>         /// 删除         /// </summary>         /// <param name="sender"></param>         /// <param name="e"></param>         protected void myFormView_ItemDeleting(object sender, FormViewDeleteEventArgs e)         {             GalleryID = ((Label)this.myFormView.FindControl("lblGalleryID")).Text;             Response.Write(" " + GalleryID + " " + GalleryName + " " + Picture);             //myFormView.ChangeMode(FormViewMode.ReadOnly);             //BindData();         }     } }