gridview快速添加行，删除行和修改行

以前看到很多人在网上说要关于gridview的资料现在我把用于编辑，修改的东西贴出来

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.SqlClient;

public partial class charge : System.Web.UI.Page

{

protected SqlCommand com;

protected SqlDataReader reader;

protected SqlConnection con;

protected SqlDataAdapter da;

protected DataSet ds;

protected string sql, strsql, var_strsql;

DataTable myTable;

DataColumn col;

Int32 i = 0;

protected void Page_Load(object sender, EventArgs e)

{

if (!IsPostBack)

{

if (Request.QueryString["action"] == "edit")

{

lbID.Text = Request.QueryString["id"];

show();

show1.Visible = false;

show2.Visible = false;

show3.Visible = false;

data.Visible = false;

btn_ok.Text = "修改";

txt_pi.Focus();

btn_ok.Attributes.Add("onclick", "javascript: return confirm('你確定要修改嗎?');");

}

else

{

lbl_sql.Text = "select * from charge";

data.DataSource = CreateNewDataSource();

data.DataBind();

txt_pi.Focus();

}

Web 窗体设计器生成的代码

protected void init_text()

{

txt_pi.Text = "";

txt_des.Text = "";

txt_cou.Text = "";

}

protected void Add1_Click(object sender, EventArgs e)

{

if (txt_pi.Text.Trim() != "")

{

data.DataSource = CreateDataSource();

data.DataBind();

init_text();

this.txt_pi.Focus();

}

else

{

Response.Write("<Script>alert("PI編號不能为空");</Script>");

}

System.Collections.ICollection CreateNewDataSource() //建立内存数据库

{

DataTable myTable = new DataTable("myTable");

col = myTable.Columns.Add("row", typeof(Int32));

col = myTable.Columns.Add("pi", typeof(string));

myTable.Columns.Add("remark", typeof(string));

myTable.Columns.Add("charge", typeof(string));

ViewState["myTable"] = myTable;

DataView myView = new DataView(myTable);

return myView;

}

System.Collections.ICollection CreateDataSource()

{

if (ViewState["myTable"] != null) //实例化myTable

{

myTable = (DataTable)ViewState["myTable"];

}

DataRow NewRow = myTable.NewRow();

Session["i"] = System.Convert.ToInt32(Session["i"]) + 1;

NewRow["row"] = System.Convert.ToInt32(Session["i"]);

NewRow["pi"] = " " + txt_pi.Text.Trim();

NewRow["remark"] = " " + txt_des.Text.Trim();

NewRow["charge"] = " " + txt_cou.Text.Trim();

myTable.Rows.Add(NewRow);

ViewState["myTable"] = myTable;

DataView myView = new DataView(myTable);

//myView.Sort = "modu_id"; //数据排序

return myView;

}

protected void data_RowCommand(object sender, GridViewCommandEventArgs e)

{

if (e.CommandName == "select") //单击编辑按钮时发生的事件

{

int index = Convert.ToInt32(e.CommandArgument);

txt_row.Text = Convert.ToString(index + 1);

txt_pi.Text = " " + data.Rows[index].Cells[1].Text.ToString().Trim();

txt_des.Text = " " + data.Rows[index].Cells[3].Text.ToString().Trim();

txt_cou.Text = " " + data.Rows[index].Cells[2].Text.ToString().Trim();

}

protected void edit_Click(object sender, EventArgs e)

{

if (ViewState["myTable"] != null)

myTable = (DataTable)ViewState["myTable"];

DataRow[] rowfind = myTable.Select("row ='" + txt_row.Text.Trim() + "'");

if (rowfind.Length > 0)

{

rowfind[0]["pi"] = txt_pi.Text.Trim();

rowfind[0]["remark"] = txt_des.Text.Trim();

rowfind[0]["charge"] = txt_cou.Text.Trim();

}

ViewState["myTable"] = myTable;

data.DataSource = myTable.DefaultView; //将ds对象中的表邦定到DataList控件

data.DataBind();

init_text();

}

protected void data_RowCreated(object sender, GridViewRowEventArgs e)

{

//e.Row.Cells[0].Attributes.Add("onclick", "return confirm('您是否确定要删除这条信息');");

}

protected void del_Click(object sender, EventArgs e)

{

if (ViewState["myTable"] != null)

myTable = (DataTable)ViewState["myTable"];

DataRow rowindex = myTable.Rows[i];

DataRow[] rowfind = myTable.Select("row='" + txt_row.Text.Trim() + "'");

rowfind[0].Delete();

ViewState["myTable"] = myTable;

for (int x = 0; x < myTable.Rows.Count; x++)

{

rowindex = myTable.Rows[x];

rowindex["row"] = x + 1;

}

data.DataSource = myTable.DefaultView; //将ds对象中的表邦定到DataList控件

data.DataBind();

}

protected void show()

{

string a = Request.QueryString["id"];

//lbl1.Text = Request.QueryString["action"];

btn_ok.Text = "修改";

SqlConnection con = DBCon.creatConnection(); //連接資料源

string strSql = "select * from count_gs where id='" + a + "'";

con.Open();

com = new System.Data.SqlClient.SqlCommand(strSql, con); //對資料庫的查詢、對存儲過程的調用、返回特定表的直接請求

SqlDataAdapter my = new SqlDataAdapter(strSql, con); //DataAdapter物件充當資料庫和ADO.NET物件模型中斷開連接的物件之間的橋梁

DataTable tbl = new DataTable(); //一旦從資料庫中讀出資料，並將其存在DataTable中，資料與伺服器的連接就斷開

//my.SelectCommand = com; //指定命令物件以便從資料存儲區檢索行

my.Fill(tbl); //通過DataAdapter物件的Fill方法，把查詢的結果存在DataTable中

DataRow row = tbl.Rows[0];

txt_pi.Text = System.Convert.ToString(row["pi"]).Trim();

txt_des.Text = System.Convert.ToString(row["remark"]).Trim();

txt_cou.Text = System.Convert.ToString(row["charge"]).Trim();

}

protected void btn_ok_Click(object sender, EventArgs e)

{

if (Request.QueryString["action"] == "add")

{

if (ViewState["myTable"] != null)

myTable = (DataTable)ViewState["myTable"];

foreach (DataRow row in myTable.Rows)

{

string tt = Session["userID"].ToString();

string addsql = "insert into count_gs(pi,remark,charge,last_update_by,last_update_date) values('" + row["pi"] + "','" + row["remark"].ToString() + "','" + row["charge"].ToString() + "','" + tt + "','" + DateTime.Now.ToShortDateString() + "')";

// Response.Write(addsql);

SqlConnection con = DBCon.creatConnection();

con.Open();

com = new System.Data.SqlClient.SqlCommand(addsql, con);

com.ExecuteNonQuery();

com.Dispose();

con.Close();

}

Response.Write("<Script>alert("保存完成");</Script>");

init_text();

data.DataSource = CreateNewDataSource();

data.DataBind();

}

else

{

string td = Session["userID"].ToString();

SqlConnection con = DBCon.creatConnection(); //實例物件資料庫連接物件con

con.Open();

string sql = "UPDATE count_gs SET pi='" + txt_pi.Text.ToString().Trim() + "',remark='" + txt_des.Text.ToString().Trim() + "',charge='" + txt_cou.Text.ToString().Trim() + "',last_update_by='" + td + "',last_update_date='" + DateTime.Now.ToString() + "' where id='" + Request.QueryString["id"] + "'";

//Response.Write(sql);

com = new System.Data.SqlClient.SqlCommand(sql, con);

com.ExecuteNonQuery();

com.Dispose(); //釋放com物件佔用的資源

con.Close();

Response.Write("<Script>alert("記錄已修改");</Script>");

show();

}

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="charge.aspx.cs" Inherits="charge" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<style>

.navPoint {CURSOR: hand; FONT-FAMILY: Webdings; FONT-SIZE: 7pt}

</style>

</head>

<%--<script language=javascript type="text/javascript">

function check()

{

var matname=String(document.form1.matName.value);

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gridview快速添加行，删除行和修改行