ASP.NET数据绑定之DataList控件实战篇

<ItemTemplate> 
 <asp:LinkButton ID="lbtnShowDetails" runat="server" CommandName="select" ForeColor="Red">查看</asp:LinkButton> 
 <asp:LinkButton ID="lbtnEdit" runat="server" CommandName="edit" ForeColor="Red">编辑</asp:LinkButton> 
 <%# DataBinder.Eval(Container.DataItem,"personName") %> 
</ItemTemplate> 

 <SelectedItemTemplate> 
 员工编号： <%# DataBinder.Eval(Container.DataItem,"pID") %> 
 <br /> 
 员工姓名： <%# DataBinder.Eval(Container.DataItem,"personName") %> 
 <br /> 
 员工性别： <%# DataBinder.Eval(Container.DataItem,"personSex") %> 
</SelectedItemTemplate> 

<EditItemTemplate> 
 <asp:LinkButton ID="lbtnupdate" runat="server" CommandName="update">保存</asp:LinkButton> 
 <asp:LinkButton ID="lbtnCancel" runat="server" CommandName="cancel">取消</asp:LinkButton> <br /> 
 员工编号：<%# DataBinder.Eval(Container.DataItem,"pID") %><br />姓名：<asp:TextBox ID="txtName" runat="server" <span style="color:#FF0000;">Text='<%# DataBinder.Eval(Container.DataItem,"personName") %>'</span> Width="50px"></asp:TextBox> 
</EditItemTemplate> 

<HeaderTemplate> 
  模板的页眉 
 </HeaderTemplate> 
 <FooterTemplate> 
  <br /> 
  模板的页脚 
 </FooterTemplate> 

private void dataBindToDataList() 
  { 
   SqlConnection con = DB.createConnection(); 
   SqlDataAdapter sda = new SqlDataAdapter(); 
   string sql = "select * from person "; 
   sda.SelectCommand = new SqlCommand(sql, con); 
   DataSet ds = new DataSet(); 
   sda.Fill(ds, "per"); 
   DataList1.DataKeyField = "pID"; //将主键存入到DataKeys集合当中，以便后面对某一条数据进行编辑。 
   DataList1.DataSource = ds.Tables["per"]; 
   DataList1.DataBind(); 
  } 

protected void Page_Load(object sender, EventArgs e) 
  { 
   if (!this.IsPostBack) 
   { 
    this.dataBindToDataList(); 
   } 
  } 

protected void DataList1_ItemCommand(object source, DataListCommandEventArgs e)// e表示DataList传递给该函数的信息。 
  { 
   if (e.CommandName == "select") 
   { 
    this.DataList1.SelectedIndex = e.Item.ItemIndex; 
    this.dataBindToDataList(); 
   } 
  } 

protected void DataList1_EditCommand(object source, DataListCommandEventArgs e)// e表示DataList传递给该函数的信息。 
  { 
   this.DataList1.EditItemIndex = e.Item.ItemIndex;//e.Item表示DataList中发生事件的那一项 
   this.dataBindToDataList(); 
 
  } 

protected void DataList1_CancelCommand(object source, DataListCommandEventArgs e)// e表示DataList传递给该函数的信息。 
  { 
   DataList1.EditItemIndex = -1; //当EditItemIndex属性值为-1时，表示不显示EditItemTemplate模板 
   dataBindToDataList(); 
  } 
 
  protected void DataList1_UpdateCommand(object source, DataListCommandEventArgs e) 
  { 
    string ID =DataList1.DataKeys[e.Item.ItemIndex].ToString(); 
    string name = ((TextBox)e.Item.FindControl("txtName")).Text ; 
    SqlConnection con = DB.createConnection(); 
    SqlCommand cmd = new SqlCommand("update person set personName='"+name+"'where pID='"+ID+"'",con); 
    cmd.ExecuteNonQuery(); 
    DataList1.EditItemIndex = -1; 
    dataBindToDataList(); 
  } 
  protected void DataList1_DeleteCommand(object source, DataListCommandEventArgs e) 
  { 
   string ID = DataList1.DataKeys[e.Item.ItemIndex].ToString(); 
   SqlConnection con = DB.createConnection(); 
   SqlCommand cmd = new SqlCommand("delete from person where pID='" + ID + "'", con); 
   cmd.ExecuteNonQuery(); 
   DataList1.EditItemIndex = -1; 
   dataBindToDataList(); 
  }