xml file】
The two daughters of Maeve, half-sisters,
battle one another for control of England. Sequel to
Oberon's Legacy.
A deep sea diver finds true love twenty
thousand leagues beneath the sea.
An anthology of horror stories about roaches,
centipedes, scorpions and other insects.
After an inadvertant trip through a Heisenberg
Uncertainty Device, James Salway discovers the problems
of being quantum.
Microsoft's .NET initiative is explored in
detail in this deep programmer's reference.
The Microsoft MSXML3 parser is covered in
detail, with attention to XML DOM interfaces, XSLT processing,
SAX and more.
Microsoft Visual Studio 7 is explored in depth,
looking at how Visual Basic, Visual C++, C#, and ASP+ are
integrated into a comprehensive development
environment.
[.cs file]
using System;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data;
namespace XmlEditInsertDeleteInGridView
{
public partial class Default : System.Web.UI.Page
{
///
/// For the first time when the page loads, load data into DataTable
/// with DataSet, and save the DataTable into ViewState for further
/// usage.
///
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
DataSet ds = new DataSet();
ds.ReadXml(Request.MapPath("try.xml"));
GridView1.DataSource = ds.Tables[0];
GridView1.DataBind();
ViewState["dt"] = ds.Tables[0];
}
}
///
/// Handle the Edit event of GridView for assigning the specific row to be
/// in the edit mode.
///
protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e)
{
GridView1.EditIndex = e.NewEditIndex;
GridView1.DataSource = (DataTable)ViewState["dt"];
GridView1.DataBind();
}
///
/// Update the specific row in the DataTable with the data from GridView,
/// re-write the data into the xml file and re-databind again.
///
protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)
{
DataTable dt = (DataTable)ViewState["dt"];
for (int i = 1; i < GridView1.Rows[e.RowIndex].Cells.Count; i++)
{
dt.Rows[e.RowIndex][i-1] = (GridView1.Rows[e.RowIndex].Cells[i].Controls[0] as TextBox).Text;
}
dt.AcceptChanges();
GridView1.EditIndex = -1;
GridView1.DataSource = dt;
GridView1.DataBind();
dt.WriteXml(Request.MapPath("try.xml"));
}
///
/// Cancel edit and set the mode of the GridView to normal viewing mode.
///
protected void GridView1_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)
{
GridView1.EditIndex = -1;
DataTable dt = (DataTable)ViewState["dt"];
GridView1.DataSource = dt;
GridView1.DataBind();
}
///
/// Insert the data into the DataTable, re-write into the xml file and
/// re-databind to the GridView.
///
protected void btnInsert_Click(object sender, EventArgs e)
{
DataTable dt = (DataTable)ViewState["dt"];
dt.Rows.Add(tbAuthor.Text, tbTitle.Text, tbGenre.Text, tbPrice.Text, tbPublishDate.Text, tbDescription.Text, tbId.Text);
dt.AcceptChanges();
dt.WriteXml(Request.MapPath("try.xml"));
GridView1.DataSource = dt;
GridView1.DataBind();
}
///
/// Delete the row from DataTable and write data into xml file,
/// re-databind to the GridView.
///
protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e)
{
DataTable dt = (DataTable)ViewState["dt"];
dt.Rows.RemoveAt(e.RowIndex);
dt.WriteXml(Request.MapPath("try.xml"));
GridView1.DataSource = dt;
GridView1.DataBind();
}
}
}
【aspx file】
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="XmlEditInsertDeleteInGridView.Default" %>
