C# 如何在单击按钮时从GridView中删除所选行(使用复选框)?
我有一个GridView,其中包含从文本框中提取的多行(使用会话)数据。GridView上应该有一列,每行包含复选框,用于选择要删除的行我在GridView外有一个按钮。单击它,GridView中的所有选定行(使用复选框)都应从GridView中“删除”。我不想要GridView上的“删除链接”。 请对下面给出的代码进行必要的更改以实现此功能。 default.aspxC# 如何在单击按钮时从GridView中删除所选行(使用复选框)?,c#,asp.net,sql-server,web-applications,gridview,C#,Asp.net,Sql Server,Web Applications,Gridview,我有一个GridView,其中包含从文本框中提取的多行(使用会话)数据。GridView上应该有一列,每行包含复选框,用于选择要删除的行我在GridView外有一个按钮。单击它,GridView中的所有选定行(使用复选框)都应从GridView中“删除”。我不想要GridView上的“删除链接”。 请对下面给出的代码进行必要的更改以实现此功能。 default.aspx <body> <form id="form1" runat="server"> <
<body>
<form id="form1" runat="server">
<div>
<asp:Button ID="Button1" runat="server" Text="Add to Grid" OnClick="Button1_Click" />
<br />
<asp:GridView ID="GridView1" runat="server" DataKeyNames="EmpID" AutoGenerateColumns="false"
OnRowEditing="GridView1_RowEditing" OnRowCancelingEdit="GridView1_RowCancelingEdit"
OnRowDeleting="GridView1_RowDeleting" OnPageIndexChanging="GridView1_PageIndexChanging"
PageSize="5" AllowPaging="true" OnRowUpdating="GridView1_RowUpdating" Width="800">
<Columns>
<asp:TemplateField HeaderText="Employee ID">
<ItemTemplate>
<%#Eval("EmpID")%>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Employee Name">
<ItemTemplate>
<%#Eval("EmpName")%>
</ItemTemplate>
<EditItemTemplate>
<asp:TextBox ID="txtEmpName" runat="server" Text='<%#Eval("EmpName") %>'></asp:TextBox>
</EditItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Salary">
<ItemTemplate>
<%#Eval("EmpSalary")%>
</ItemTemplate>
<EditItemTemplate>
<asp:TextBox ID="txtEmpSalary" runat="server" Text='<%#Eval("EmpSalary") %>'></asp:TextBox>
</EditItemTemplate>
</asp:TemplateField>
<asp:CommandField HeaderText="Modify" ShowEditButton="true" EditText="Edit">
<ControlStyle Width="50" />
</asp:CommandField>
<asp:TemplateField HeaderText="Delete">
<ItemTemplate>
<asp:LinkButton ID="lnkDelete" CommandName="Delete" runat="server" OnClientClick="return confirm('Are you sure you want to delete these records?');">Delete</asp:LinkButton>
</ItemTemplate>
</asp:TemplateField>
**<asp:TemplateField HeaderText="Tick to Delete Rows">
<ItemTemplate>
<asp:CheckBox ID="chkDelete" runat="server" Text="Select" />
</ItemTemplate>
<HeaderTemplate>
</HeaderTemplate>
</asp:TemplateField>**
</Columns>
</asp:GridView>
</div>
<p style="width: 799px">
<asp:Button ID="Button3" runat="server" onclick="Button3_Click" Text="Delete Checked items" Width="162px" /></p>
</body>
删除
**
**
default.aspx.cs
using System;
using System.Collections;
using System.Collections.Generic;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Linq;
using System.Xml.Linq;
using System.Data;
using System.Data.SqlClient;
public partial class _Default : System.Web.UI.Page
{
SqlConnection sqlcon = new SqlConnection(ConfigurationManager.AppSettings["constring"]);
SqlCommand sqlcmd = new SqlCommand();
SqlDataAdapter da = new SqlDataAdapter();
DataTable dt = new DataTable();
DataTable dt1 = new DataTable();
DataRow dr;
DataRow dr1;
DataSet ds = new DataSet();
protected void Page_Load(object sender, EventArgs e)
{
Label1.Text = "";
//lbldbmsg.Text = "";
if (!Page.IsPostBack)
{
dt.Columns.Add("EmpID");
dt.Columns.Add("EmpName");
dt.Columns.Add("EmpSalary");
Session["reptable"] = dt;
GridData();
}
}
protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e)
{
string EmpID;
EmpID = GridView1.DataKeys[e.RowIndex].Value.ToString();
if (Session["reptable"] != null)
{
DataTable dt1 = new DataTable();
dt1.Clear();
dt1 = Session["reptable"] as DataTable;
for (int i = 0; i <= dt1.Rows.Count - 1; i++)
{
DataRow dr;
if (dt1.Rows[i][0].ToString() == EmpID)
{
dr = dt1.Rows[i];
dt1.Rows[i].Delete();
//dt1.Rows.Remove(dr);
}
}
Session.Remove("reptable");
Session["reptable"] = dt1;
}
GridData();
}
protected void GridView1_PageIndexChanging(object sender, GridViewPageEventArgs e)
{
GridView1.PageIndex = e.NewPageIndex;
GridData();
}
protected void Button1_Click(object sender, EventArgs e)
{
dt = (DataTable)Session["reptable"];
dr = dt.NewRow();
dr["EmpID"] = TextBox1.Text;
dr["EmpName"] = TextBox2.Text;
dr["EmpSalary"] = TextBox3.Text;
dt.Rows.Add(dr);
Session.Remove("reptable");
Session["reptable"] = dt;
GridData();
TextBox1.Text = "";
TextBox2.Text = "";
TextBox3.Text = "";
}
protected void Button3_Click(object sender, EventArgs e)
{
}
}
使用系统;
使用系统集合;
使用System.Collections.Generic;
使用系统配置;
使用System.Web;
使用System.Web.Security;
使用System.Web.UI;
使用System.Web.UI.HTMLControl;
使用System.Web.UI.WebControl;
使用System.Web.UI.WebControl.WebParts;
使用System.Linq;
使用System.Xml.Linq;
使用系统数据;
使用System.Data.SqlClient;
公共部分类\u默认值:System.Web.UI.Page
{
SqlConnection sqlcon=newsqlconnection(ConfigurationManager.AppSettings[“constring”]);
SqlCommand sqlcmd=新的SqlCommand();
SqlDataAdapter da=新的SqlDataAdapter();
DataTable dt=新的DataTable();
DataTable dt1=新DataTable();
数据行dr;
数据行dr1;
数据集ds=新数据集();
受保护的无效页面加载(对象发送方、事件参数e)
{
标签1.Text=“”;
//lbldbmsg.Text=“”;
如果(!Page.IsPostBack)
{
dt.列。添加(“EmpID”);
dt.列。添加(“EmpName”);
dt.列。添加(“EMPALARY”);
会话[“reptable”]=dt;
GridData();
}
}
受保护的无效GridView1_行删除(对象发送方,GridViewDeleteEventArgs e)
{
字符串EmpID;
EmpID=GridView1.DataKeys[e.RowIndex].Value.ToString();
if(会话[“reptable”]!=null)
{
DataTable dt1=新DataTable();
dt1.Clear();
dt1=会话[“reptable”]作为数据表;
对于(int i=0;i您可以在girdview中使用buttonfield而不是checkbox,然后您可以将rowcommand事件添加到gridview中,例如:
您可以在girdview中使用buttonfield而不是checkbox,然后您可以将rowcommand事件添加到gridview中,例如:
其实很简单,你所要做的就是:
在Delete buttons OnClick事件中循环浏览网格视图行
在每行中找到“删除”复选框,并查看是否勾选了该复选框
实现您的删除逻辑
下面是一个示例,我相信您可以根据需要对其进行更改,以适应您的场景:
protected void DeleteClick(object sender,EventArgs e)
{
for (int i=0; i < GridView1.Rows.Count;i++)
{
CheckBox chkDelete = GridView1.Rows[i].FindControl("chkDelete") as CheckBox;
if (chkDelete != null && chkDelete.Checked)
{
//Delete the item
}
}
}
protectedvoid DeleteClick(对象发送方,事件参数e)
{
for(int i=0;i
更新:
下面是一个如何删除行的示例
protected void DeleteClick(object sender,EventArgs e)
{
DataTable table = (DataTable)Session["reptable"];
for (int i = 0; i < GridView1.Rows.Count; i++)
{
CheckBox chkDelete = GridView1.Rows[i].FindControl("chkDelete") as CheckBox;
if (chkDelete != null && chkDelete.Checked)
{
var empId = GridView1.DataKeys[i]["EmpID"];
DataRow dr = table.Select(String.Format("EmpID={0}", empId)).First();
if (dr != null)
dr.Delete();
}
}
//Rebind your grid view here to view the changes e.g
GridView1.DataSource = table;
GridView1.DataBind();
}
protectedvoid DeleteClick(对象发送方,事件参数e)
{
DataTable=(DataTable)会话[“reptable”];
对于(int i=0;i
这真的很简单,你所要做的就是:
在Delete buttons OnClick事件中循环浏览网格视图行
在每行中找到“删除”复选框,并查看是否勾选了该复选框
实现您的删除逻辑
下面是一个示例,我相信您可以根据需要对其进行更改,以适应您的场景:
protected void DeleteClick(object sender,EventArgs e)
{
for (int i=0; i < GridView1.Rows.Count;i++)
{
CheckBox chkDelete = GridView1.Rows[i].FindControl("chkDelete") as CheckBox;
if (chkDelete != null && chkDelete.Checked)
{
//Delete the item
}
}
}
protectedvoid DeleteClick(对象发送方,事件参数e)
{
for(int i=0;i
更新:
下面是一个如何删除行的示例
protected void DeleteClick(object sender,EventArgs e)
{
DataTable table = (DataTable)Session["reptable"];
for (int i = 0; i < GridView1.Rows.Count; i++)
{
CheckBox chkDelete = GridView1.Rows[i].FindControl("chkDelete") as CheckBox;
if (chkDelete != null && chkDelete.Checked)
{
var empId = GridView1.DataKeys[i]["EmpID"];
DataRow dr = table.Select(String.Format("EmpID={0}", empId)).First();
if (dr != null)
dr.Delete();
}
}
//Rebind your grid view here to view the changes e.g
GridView1.DataSource = table;
GridView1.DataBind();
}
protectedvoid DeleteClick(对象发送方,事件参数e)
{
DataTable=(DataTable)会话[“reptable”];
对于(int i=0;i
但是如何删除该项呢?首先,您需要创建一个存储过程来从数据库中删除记录