利用GridView进行编辑操作

     在Visual Studio 2005中，GridView的使用频率是比较的大，我们可以里用它提供的编辑、删除功能，进行编辑、删除操作，在进行编辑操作时，我们希望我们相对应的表的主键值保持不变， 我们可以将某一列，转化为模板列，对木板列进行编辑操作。
     HTML代码如下：

<% ... @ Page Language="C#" AutoEventWireup="true" StylesheetTheme="Default" Theme="Default"
    CodeFile="OfficeType.aspx.cs" Inherits="Admin_OfficeType"  %>

<! DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd" >
< html  xmlns ="http://www.w3.org/1999/xhtml" >
< head  runat ="server" >
     < title > 办公用品类型 </ title >
</ head >
< body >
     < form  id ="form1"  runat ="server" >
         < fieldset >
             < legend > 相关设置 </ legend >
             < div  id ="tabsF" >
                 < ul >
                     < li >< a  href ="Default.aspx"  title ="返回" >< span > 返回 </ span ></ a ></ li >
                 </ ul >
             </ div >
         </ fieldset >
         < div >
             < fieldset >
                 < legend > 办公用品类型列表： </ legend >
                 < asp:GridView  ID ="gvOfficeType"  runat ="server"  SkinID ="Default_GridView"  OnRowCancelingEdit ="gvOfficeType_RowCancelingEdit"
                    OnRowEditing ="gvOfficeType_RowEditing"  OnRowUpdating ="gvOfficeType_RowUpdating"
                    OnRowDataBound ="gvOfficeType_RowDataBound" >
                     < Columns >
                         < asp:BoundField  DataField ="TypeName"  HeaderText ="类型名称"   />
                         < asp:TemplateField  HeaderText ="类型编号" >
                             < EditItemTemplate >
                                 < asp:TextBox  ID ="TextBox1"  runat ="server"  Enabled ="False"  Text ='<%#  Bind("TypeCode") % > '> </ asp:TextBox >
                             </ EditItemTemplate >
                             < ItemTemplate >
                                 < asp:Label  ID ="Label1"  runat ="server"  Text ='<%#  Bind("TypeCode") % > '> </ asp:Label >
                             </ ItemTemplate >
                         </ asp:TemplateField >
                         < asp:TemplateField  HeaderText ="是否启用" >
                             < EditItemTemplate >
                                 < asp:CheckBox  ID ="CheckBox1"  runat ="server"  Checked ='<%#  Bind("IfUsing") % > ' Text="启用" />
                             </ EditItemTemplate >
                             < ItemTemplate >
                                 < asp:CheckBox  ID ="CheckBox1"  runat ="server"  Checked ='<%#  Bind("IfUsing") % > ' Enabled="false"
                                    Text="启用" />
                             </ ItemTemplate >
                         </ asp:TemplateField >
                         < asp:CommandField  ShowEditButton ="True"  CausesValidation ="False"   />
                     </ Columns >
                 </ asp:GridView >
             </ fieldset >
             < fieldset  style ="text-align: center" >
                 < legend > 创建办公用品类型 </ legend >
                 < table  cellpadding ="4" >
                     < tr >
                         < td  class ="tdbg" >
                            类型名称：
                         </ td >
                         < td  align ="left" >
                             < asp:TextBox  ID ="txtTypeName"  runat ="server" ></ asp:TextBox >
                             < asp:RequiredFieldValidator  ID ="RequiredFieldValidator1"  runat ="server"  ControlToValidate ="txtTypeName"
                                ErrorMessage ="类型名称不能为空" > * </ asp:RequiredFieldValidator ></ td >
                     </ tr >
                     < tr >
                         < td  class ="tdbg" >
                            类型编号： </ td >
                         < td  align ="left" >
                             < asp:TextBox  ID ="txtTypeCode"  runat ="server" ></ asp:TextBox >
                             < asp:RequiredFieldValidator  ID ="RequiredFieldValidator2"  runat ="server"  ControlToValidate ="txtTypeCode"
                                ErrorMessage ="类型编号不能为空" > * </ asp:RequiredFieldValidator ></ td >
                     </ tr >
                     < tr >
                         < td  class ="tdbg" >
                            是否启用： </ td >
                         < td  align ="left" >
                             < asp:CheckBox  ID ="chkUsing"  runat ="server"  Checked ="True"  Text ="启用"   /></ td >
                     </ tr >
                     < tr >
                         < td  align ="center"  colspan ="2" >
                             < asp:Button  ID ="btnSave"  runat ="server"  Text ="保存"  OnClick ="btnSave_Click"   />
                             < asp:Button  ID ="btnCancel"  CausesValidation ="false"  runat ="server"  Text ="取消"  OnClick ="btnCancel_Click"   />< br  />
                             < asp:Label  ID ="lblInfo"  runat ="server" ></ asp:Label ></ td >
                     </ tr >
                 </ table >
             </ fieldset >
             < fieldset >
                 < legend > 业务规则 </ legend >
                 < ul >
                     < li > 带 < span  style ="color: red" > * </ span > 项不能为空 </ li ></ ul >
             </ fieldset >
         </ div >
         < asp:ValidationSummary  ID ="ValidationSummary1"  runat ="server"  ShowMessageBox ="True"
            ShowSummary ="False"   />
     </ form >
</ body >
</ html >

以下是后台代码：

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;

public   partial   class  Admin_OfficeType : System.Web.UI.Page
... {
    //define class
    WebUtility.DataDictionary data;
    protected void Page_Load(object sender, EventArgs e)
    ...{
        if (!IsPostBack)
        ...{
            this.gvBind();
        }
    }
    protected void btnCancel_Click(object sender, EventArgs e)
    ...{
        this.txtTypeCode.Text = "";
        this.txtTypeName.Text = "";
        this.lblInfo.Text = "";
    }
    protected void btnSave_Click(object sender, EventArgs e)
    ...{
        data = new WebUtility.DataDictionary();
        WebUtility.DataDictionary.OfficeType typeOffice;
        typeOffice.TypeName = this.txtTypeName.Text;
        typeOffice.TypeCode = this.txtTypeCode.Text;
        if (this.chkUsing.Checked)
        ...{ typeOffice.IfUsing = "1"; }
        else
        ...{ typeOffice.IfUsing = "0"; }
        if (data.IsOfficeType(typeOffice))
        ...{
            this.lblInfo.ForeColor = System.Drawing.Color.Red;
            this.lblInfo.Text = this.txtTypeName.Text + " 类型已经存在，请重新填写";
            return;
        }
        int i=data.AddOfficeType(typeOffice);
        if (i > 0)
        ...{
            this.lblInfo.ForeColor = System.Drawing.Color.Green;
            this.lblInfo.Text = "办公用品类型添加成功";

            this.txtTypeCode.Text = "";
            this.txtTypeName.Text = "";
            this.gvBind();

        }
        else
        ...{
            this.lblInfo.ForeColor = System.Drawing.Color.Red;
            this.lblInfo.Text = "办公用品类型添加失败！";

        }
    }
    private void gvBind()
    ...{
        data = new WebUtility.DataDictionary();
        this.gvOfficeType.DataSource = data.DataSetOfficeType(true);
        this.gvOfficeType.DataBind();
    }
    protected void gvOfficeType_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)
    ...{
        this.gvOfficeType.EditIndex = -1;
        this.gvBind();
    }
    protected void gvOfficeType_RowEditing(object sender, GridViewEditEventArgs e)
    ...{
        this.gvOfficeType.EditIndex = e.NewEditIndex;
        this.gvOfficeType.Rows[e.NewEditIndex].Cells[1].Enabled = false;
        this.gvBind();
    }
    protected void gvOfficeType_RowUpdating(object sender, GridViewUpdateEventArgs e)
    ...{
        TextBox txtName = (TextBox)this.gvOfficeType.Rows[e.RowIndex].Cells[0].Controls[0];
        CheckBox chkIfUsing = (CheckBox)this.gvOfficeType.Rows[e.RowIndex].Cells[2].FindControl("CheckBox1");
        TextBox txtCode=(TextBox)this.gvOfficeType.Rows[e.RowIndex].Cells[1].FindControl("TextBox1");
        data = new WebUtility.DataDictionary();
        WebUtility.DataDictionary.OfficeType typeOffice;
        typeOffice.TypeName = txtName.Text;
        typeOffice.TypeCode = txtCode.Text;
        if (chkIfUsing.Checked)
            typeOffice.IfUsing = "1";
        else
            typeOffice.IfUsing = "0";
        int i=data.UpdateOfficeType(typeOffice);
        if (i > 0)
        ...{
            this.lblInfo.ForeColor = System.Drawing.Color.Green;
            this.lblInfo.Text = "办公用品类型更新成功";
        }
        else
        ...{
            this.lblInfo.ForeColor = System.Drawing.Color.Red;
            this.lblInfo.Text = "办公用品类型更新失败！";

        }
        this.gvOfficeType.EditIndex = -1;
        this.gvBind();
    }
    protected void gvOfficeType_RowDataBound(object sender, GridViewRowEventArgs e)
    ...{
        if (e.Row.RowType == DataControlRowType.DataRow)
        ...{
            e.Row.Attributes.Add("onmouseover", "e=this.style.backgroundColor; this.style.backgroundColor='linen'");
            e.Row.Attributes.Add("onmouseout", "this.style.backgroundColor=e");
        }
    }
}