GridView控件修改、删除示例（修改含有DropDownList控件

最新推荐文章于 2025-08-08 00:05:28 发布

原创最新推荐文章于 2025-08-08 00:05:28 发布 · 536 阅读

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#asp #string #object #server #textbox #数据库

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GridViewUp.aspx文件代码：

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

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

</head>

<body>

<div>

<tr>

<asp:GridView ID="GridView1" runat="server" Width="100%" CellPadding="4" ForeColor="#333333"

AutoGenerateColumns="False" AllowPaging="True" PageSize="12" OnRowCancelingEdit="GridView1_RowCancelingEdit"

OnRowEditing="GridView1_RowEditing" OnRowUpdating="GridView1_RowUpdating" OnRowDeleting="GridView1_RowDeleting"

DataKeyNames="id,name" OnPageIndexChanging="GridView1_PageIndexChanging" DataMember="card,price" OnRowDataBound="GridView1_RowDataBound" GridLines="None">

<asp:BoundField HeaderText="编号" DataField="id" ReadOnly="True" />

<asp:BoundField DataField="name" HeaderText="姓名" ReadOnly="True" />

<asp:TemplateField HeaderText="身份证号">

<%# Eval("card") %>

</ItemTemplate>

<asp:TextBox ID="TBCard" Text='<%# Eval("card") %>' runat="server" Width="140px" />

</EditItemTemplate>

</asp:TemplateField>

<asp:TemplateField HeaderText="学历">

<%# Eval("xueliText")%>

</ItemTemplate>

<asp:HiddenField ID="HDFXueli" runat="server" Value='<%# Eval("xueli") %>' />

<asp:DropDownList ID="DDLXueli" runat="server" Width="90px" />

</EditItemTemplate>

</asp:TemplateField>

<asp:TemplateField HeaderText="价格">

<%# Eval("price") %>

</ItemTemplate>

<asp:TextBox ID="TBPrice" Text='<%# Eval("price") %>' runat="server" Width="90px" />

</EditItemTemplate>

</asp:TemplateField>

<asp:BoundField HeaderText="建立时间" DataField="createdate" ReadOnly="True" />

<asp:CommandField ShowDeleteButton="True" ShowEditButton="True" HeaderText="操作" />

</Columns>

</asp:GridView>

</td>

</tr>

</table>

</div>

</form>

</body>

</html>

GridViewUp.aspx.cs文件代码：

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;

using System.Data.SqlClient;

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

{

protected void Page_Load(object sender, EventArgs e)

{

if (!IsPostBack)

{

GridViewBind();

}

protected void GridView1_PageIndexChanging(object sender, GridViewPageEventArgs e)

{

GridView1.PageIndex = e.NewPageIndex;

GridViewBind();

}

private void GridViewBind()

{

string connStr = ConfigurationManager.ConnectionStrings["ConnString"].ConnectionString;

string SqlStr = "SELECT *,case xueli when '1' then '博士' when '2' then '硕士' when '3' then '学士' else '' end as xueliText FROM test01 where id<1000 and id>200";

DataSet ds = new DataSet();

try

{

SqlConnection conn = new SqlConnection(connStr);

if (conn.State.ToString() == "Closed") conn.Open();

SqlDataAdapter da = new SqlDataAdapter(SqlStr, conn);

da.Fill(ds, "test01");

if (conn.State.ToString() == "Open") conn.Close();

GridView1.DataSource = ds.Tables[0].DefaultView;

GridView1.DataBind();

}

catch (Exception ex)

{

Response.Write("数据库错误，错误原因：" + ex.Message);

Response.End();

}

protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)

{

if (((DropDownList)e.Row.FindControl("DDLXueli")) != null)

{

DropDownList ddlxueli = (DropDownList)e.Row.FindControl("DDLXueli");

// 生成 DropDownList 的值，也可以取得数据库中的数据绑定

ddlxueli.Items.Clear();

ddlxueli.Items.Add(new ListItem("博士", "1"));

ddlxueli.Items.Add(new ListItem("硕士", "2"));

ddlxueli.Items.Add(new ListItem("学士", "3"));

// 选中 DropDownList

ddlxueli.SelectedValue = ((HiddenField)e.Row.FindControl("HDFXueli")).Value;

}

protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e)

{

GridView1.EditIndex = e.NewEditIndex;

GridViewBind();

}

protected void GridView1_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)

{

GridView1.EditIndex = -1;

GridViewBind();

}

protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)

{

string id = GridView1.DataKeys[e.RowIndex].Values[0].ToString();

string card = ((TextBox)GridView1.Rows[e.RowIndex].FindControl("TBCard")).Text;

string xueli = ((DropDownList)GridView1.Rows[e.RowIndex].FindControl("DDLXueli")).SelectedValue;

string price = ((TextBox)GridView1.Rows[e.RowIndex].FindControl("TBPrice")).Text;

string connStr = ConfigurationManager.ConnectionStrings["ConnString"].ConnectionString;

string SqlStr = "update test01 set card='" + card + "',xueli='" + xueli + "',price='" + price + "' where id=" + id;

try

{

SqlConnection conn = new SqlConnection(connStr);

if (conn.State.ToString() == "Closed") conn.Open();

SqlCommand comm = new SqlCommand(SqlStr, conn);

comm.ExecuteNonQuery();

comm.Dispose();

if (conn.State.ToString() == "Open") conn.Close();

GridView1.EditIndex = -1;

GridViewBind();

}

catch (Exception ex)

{

Response.Write("数据库错误，错误原因：" + ex.Message);

Response.End();

}

protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e)

{

string id = GridView1.DataKeys[e.RowIndex].Values[0].ToString();

string connStr = ConfigurationManager.ConnectionStrings["ConnString"].ConnectionString;

string SqlStr = "delete from test01 where id=" + id;

try

{

SqlConnection conn = new SqlConnection(connStr);

if (conn.State.ToString() == "Closed") conn.Open();

SqlCommand comm = new SqlCommand(SqlStr, conn);

comm.ExecuteNonQuery();

comm.Dispose();

if (conn.State.ToString() == "Open") conn.Close();

GridView1.EditIndex = -1;

GridViewBind();

}

catch (Exception ex)

{

Response.Write("数据库错误，错误原因：" + ex.Message);

Response.End();

}