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我在 ASP.NET 中有一个 Gridview，我需要在其中包含 gridview 的复选框和一个更新按钮。在选中特定行的复选框时，应触发更新事件并单击更新按钮应保存更改。我已经编写了 C# 代码来更新 Gridview 而不使用复选框。但是，当包含复选框时无法继续。网格视图设计代码是：

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

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

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <asp:Label ID="Label1" runat="server" Text="Employee ID"></asp:Label>
        <asp:TextBox ID="TextBox1" runat="server" style="margin-left: 110px"></asp:TextBox>
        <br />
        <br />
        <asp:Label ID="Label2" runat="server" Text="Employee Name"></asp:Label>
        <asp:TextBox ID="TextBox2" runat="server" style="margin-left: 90px"></asp:TextBox>
        <br />
        <br />
        <asp:Label ID="Label3" runat="server" Text="Employee Experience"></asp:Label>
        <asp:TextBox ID="TextBox3" runat="server" style="margin-left: 61px"></asp:TextBox>
        <br />
        <br />
        <asp:Label ID="Label4" runat="server" Text="Employee Address"></asp:Label>
        <asp:TextBox ID="TextBox4" runat="server" style="margin-left: 79px"></asp:TextBox>
        <br />
        <br />
        <asp:Button ID="Button2" runat="server" onclick="Button2_Click" 
            style="text-align: left" Text="Submit" />
    <asp:GridView ID="EmployeeGridView" runat="server" AutoGenerateColumns="False" 
            DataKeyNames="Emp_id" onrowcancelingedit="EmployeeGridView_RowCancelingEdit" 
            onrowediting="EmployeeGridView_RowEditing" 
            onrowdeleting="EmployeeGridView_RowDeleting" 
            onrowupdating="EmployeeGridView_RowUpdating" AllowPaging="True" CellPadding="4" 
            ForeColor="#333333" GridLines="None" 
            onpageindexchanging="EmployeeGridView_PageIndexChanging" 
            Width="408px" AllowSorting="True" 
            onselectedindexchanged="EmployeeGridView_SelectedIndexChanged">   
        <AlternatingRowStyle BackColor="White" />
    <Columns>
    <asp:TemplateField HeaderText="Sr.No">
    <ItemTemplate><%#Container.DataItemIndex+1 %></ItemTemplate>
    </asp:TemplateField>
    <asp:TemplateField HeaderText="Name">
    <ItemTemplate><%#Eval("Emp_name") %></ItemTemplate>
    <EditItemTemplate>
    <asp:TextBox ID="txtempname" runat="server" Text='<%#Eval("Emp_name") %>'></asp:TextBox>
    </EditItemTemplate>
    </asp:TemplateField>    
     <asp:TemplateField HeaderText="Experience">
    <ItemTemplate><%#Eval("Emp_exp") %></ItemTemplate>
    <EditItemTemplate>
    <asp:TextBox ID="txtempexp" runat="server" Text='<%#Eval("Emp_exp") %>'></asp:TextBox>
    </EditItemTemplate>
    </asp:TemplateField>
     <asp:TemplateField HeaderText="Address">
    <ItemTemplate><%#Eval("Emp_address") %></ItemTemplate>
    <EditItemTemplate>
    <asp:TextBox ID="txtempaddress" runat="server" Text='<%#Eval("Emp_address") %>'></asp:TextBox>
    </EditItemTemplate>
    </asp:TemplateField>

  <asp:CommandField ShowEditButton="true" ButtonType ="Button" 
            ItemStyle-ForeColor= "Aqua">
<ItemStyle ForeColor="Aqua"></ItemStyle>
        </asp:CommandField>
  <asp:CommandField ShowDeleteButton="true" ButtonType="Button" HeaderText="Delete" />  
    </Columns>
        <EditRowStyle BackColor="#2461BF" />
        <FooterStyle BackColor="#507CD1" Font-Bold="True" ForeColor="White" />
        <HeaderStyle BackColor="#507CD1" Font-Bold="True" ForeColor="White" />
        <PagerSettings FirstPageText="First" LastPageText="Last" 
            Mode="NumericFirstLast" PageButtonCount="4" />
        <PagerStyle BackColor="#2461BF" ForeColor="White" HorizontalAlign="Center" />
        <RowStyle BackColor="#EFF3FB" />
        <SelectedRowStyle BackColor="#D1DDF1" Font-Bold="True" ForeColor="#333333" />
        <SortedAscendingCellStyle BackColor="#F5F7FB" />
        <SortedAscendingHeaderStyle BackColor="#6D95E1" />
        <SortedDescendingCellStyle BackColor="#E9EBEF" />
        <SortedDescendingHeaderStyle BackColor="#4870BE" />
    </asp:GridView>


    </div>
    <asp:Button ID="Button1" runat="server" Text="Update" />
    </form>
</body>
</html>

C#代码后面是：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data;
using System.Data.SqlClient;


public partial class _Default : System.Web.UI.Page
{
    string connstr = @"Data Source=xxxxxxx\SQLEXPRESS;Initial Catalog=xxxxxxxxx;Integrated Security=True";
    protected void EmployeeGridView_Sorting(object sender, GridViewSortEventArgs e)
    {
        Session["sortBy"] = e.SortExpression;
        FillGrid();
    }
    protected void Page_Load(object sender, EventArgs e)
    {
        Session["sortBy"] = null;
        if (!Page.IsPostBack)
        {
            FillGrid();
        }
    }
    public void FillGrid()
    {
        SqlConnection con = new SqlConnection(connstr);
        con.Open();
        SqlCommand cmd = new SqlCommand("GetEmployeeInfo", con);
        SqlDataReader dr = cmd.ExecuteReader();//it reads froword only data from database
        DataTable dt = new DataTable();//object of data table that uses to conatin whole data
        dt.Load(dr);//Sql Data reader data load in data table it is DataTable Method.
        EmployeeGridView.DataSource = dt;
        EmployeeGridView.DataBind();

    }
    protected void EmployeeGridView_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)
    {
        EmployeeGridView.EditIndex = -1;
        FillGrid();

    }
    protected void EmployeeGridView_RowEditing(object sender, GridViewEditEventArgs e)
    {
        EmployeeGridView.EditIndex = e.NewEditIndex;
        FillGrid();
    }

    protected void EmployeeGridView_RowUpdating(object sender, GridViewUpdateEventArgs e)
    {
        int empid = Convert.ToInt32(EmployeeGridView.DataKeys[e.RowIndex].Value.ToString());//Get Each Row unique value from DataKeyNames
        string name = ((TextBox)EmployeeGridView.Rows[e.RowIndex].FindControl("txtempname")).Text;//get TextBox Value in EditItemTemplet that row is clicked
        string experience = ((TextBox)EmployeeGridView.Rows[e.RowIndex].FindControl("txtempexp")).Text;
        string address = ((TextBox)EmployeeGridView.Rows[e.RowIndex].FindControl("txtempaddress")).Text;
        SqlConnection con = new SqlConnection(connstr);
        con.Open();
        SqlCommand cmd = new SqlCommand("EmployeeUpdate", con);
        cmd.CommandType = CommandType.StoredProcedure;
        cmd.Parameters.AddWithValue("@emp_id ", empid);
        cmd.Parameters.AddWithValue("@emp_name ", name);
        cmd.Parameters.AddWithValue("@emp_exp ", experience);
        cmd.Parameters.AddWithValue("@emp_address ", address);
        cmd.ExecuteNonQuery();//Sql Command Class method return effected rows use for insert,update, delete
        EmployeeGridView.EditIndex = -1;// no row in edit mode
        FillGrid();
    }
    protected void EmployeeGridView_RowDeleting(object sender, GridViewDeleteEventArgs e)
    {
        int empid = Convert.ToInt32(EmployeeGridView.DataKeys[e.RowIndex].Value.ToString());
        SqlConnection con = new SqlConnection(connstr);
        con.Open();
        SqlCommand cmd = new SqlCommand("DeleteEmployee", con);
        cmd.CommandType = CommandType.StoredProcedure;
        cmd.Parameters.AddWithValue("@emp_id ", empid);
        cmd.ExecuteNonQuery();
        FillGrid();

    }
    protected void EmployeeGridView_PageIndexChanging(object sender, GridViewPageEventArgs e)
    {
        EmployeeGridView.PageIndex = e.NewPageIndex;
        FillGrid();

    }
    private void UpdateOrAddNewRecord(string Emp_id, string Emp_name, string Emp_exp, string Emp_address)
    {
        SqlConnection con = new SqlConnection(connstr);
        string sqlStatement = string.Empty;
        sqlStatement = "INSERT INTO tbl_employee" +
                       "(Emp_id, Emp_name, Emp_exp, Emp_address)" +
                       "VALUES (@Emp_id, @Emp_name, @Emp_exp, @Emp_address)";
        con.Open();
        SqlCommand cmd = new SqlCommand(sqlStatement, con);
        cmd.Parameters.AddWithValue("@Emp_id", Emp_id);
        cmd.Parameters.AddWithValue("@Emp_name", Emp_name);
        cmd.Parameters.AddWithValue("@Emp_exp", Emp_exp);
        cmd.Parameters.AddWithValue("@Emp_address", Emp_address);
        cmd.CommandType = CommandType.Text;
        cmd.ExecuteNonQuery();
        con.Close();
    }
    protected void Button2_Click(object sender, EventArgs e)
    {
        UpdateOrAddNewRecord(TextBox1.Text, TextBox2.Text, TextBox3.Text, TextBox4.Text);
        FillGrid();
    }
}

我没有保留 DeleteEmployee、EmployeeUpdate、GetEmployeeInfo 存储过程的代码。

在上面的代码中，我需要为 gridview 插入复选框并更新检查的项目，而不是单击编辑按钮然后更新

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1 回答 1

2

在单击更新按钮时执行这些操作。循环遍历网格的每一行。在每一行中，获取相应的复选框检查 CheckedBox 是否已选中如果已选中，则从当前行检索其他值并调用您的更新方法。

 for (int innercounter = 0; innercounter < grid.Rows.Count; innercounter++)
 {
CheckBox chkSelect;
chkSelect = (CheckBox)grid.Rows[innercounter].Cells[0].FindControl("ChkSelect");
if (chkSelect.Checked == true)
  {
     Label Field1 = (Label)grid.Rows[innercounter].Cells[1].FindControl("txtFieldName1");
     Label Field2 = (Label)grid.Rows[innercounter].Cells[2].FindControl("txtFieldName2");
     Update(Field1.text,Field2.text)
  }

}
于 2013-03-29T13:50:57.607 回答