• GridView的自定义分页,单选、多选、排序、自增列的简单应用


    1.前台代码

    <%@ Page Language="C#" AutoEventWireup="true" CodeFile="testgridview2.aspx.cs" Inherits="web_testgridview2" %>

    <!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 id="Head1" runat="server">
        
    <title></title>

        
    <script language="javascript" type="text/javascript">    
        
    // 判断多选是否与选中项(没有选中的返回false)
        function slcNo_click()
        
    {
            
    if (document.form1.checkboxname.length)
            
    {
                
    for (var i=0;i<document.form1.checkboxname.length;i++)
                
    {
                    
    if(document.form1.checkboxname[i].checked)
                    
    {
                        
    return true;
                    }

                }

            }

            
    else
            
    {
                
    if(document.form1.checkboxname.checked)
                
    {
                    
    return true;
                }

            }

            alert(
    "请选择后再操作!");
            
    return false;
        }

        
        
    // 鼠标经过改变行的颜色
        if (!objbeforeItem)
        
    {
            
    var objbeforeItem=null;
            
    var objbeforeItembackgroundColor=null;
        }
        
        
    function ItemOver(obj)
        
    {
            
    if(objbeforeItem)
            
    {
                objbeforeItem.style.backgroundColor 
    = objbeforeItembackgroundColor;
            }

            objbeforeItembackgroundColor 
    = obj.style.backgroundColor;
            objbeforeItem 
    = obj;
            obj.style.backgroundColor 
    = "#B9D1F3";     
        }

        
    //        
     
        
    // 多选的全选与取消
        function checkJs(boolvalue)
        
    {
            
    if(document.all.checkboxname.length>1)
            
    {
                
    for(var i=0;i<document.all.checkboxname.length;i++)
                
    {
                    document.all.checkboxname[i].checked 
    = boolvalue;            
                }

            }

            
    else
                document.all.checkboxname.checked 
    = boolvalue;
        }

        
    //
        
        
    // 只有全部选中时“全选”选中
        function SingleCheckJs()
        
    {
            
    var flag1=false;
            
    var flag2=false;
            
            
    if (document.form1.checkboxname.length)
            
    {
                
    for (var i=0;i<document.form1.checkboxname.length;i++)
                
    {
                    
    if(document.form1.checkboxname[i].checked)
                        flag1 
    = true;
                    
    else
                        flag2 
    = true;
                }

            }

            
    else
            
    {
                
    if(document.form1.checkboxname.checked)
                    flag1 
    = true;
                
    else
                    flag2 
    = true;
            }

            
            
    if(flag1==true&&flag2==false)
                document.getElementById(
    "chk").checked = true;
            
    else
                document.getElementById(
    "chk").checked = false;
        }

        
    //
        
    </script>
    </head>
    <body>
        
    <form id="form1" runat="server">
            
    <div>
                
    <table cellpadding="0" cellspacing="0" border="0" width="80%" style="font-size: 11px">
                    
    <tr>
                        
    <td align="center">
                            
    <asp:GridView ID="GridView1" runat="server" Width="100%" CellPadding="4" ForeColor="#333333"
                                AutoGenerateColumns
    ="False" AllowPaging="True" PageSize="12" BorderColor="Silver"
                                BorderStyle
    ="Solid" BorderWidth="1px" OnRowDataBound="GridView1_RowDataBound"
                                ShowFooter
    ="True" EmptyDataText="没有数据记录!!" AllowSorting="True" OnSorting="GridView1_Sorting">
                                
    <Columns>
                                    
    <asp:BoundField HeaderText="编号" DataField="id" Visible="False" />
                                    
    <asp:TemplateField HeaderText="<input type='checkbox' id='chk' name='chk' onclick='checkJs(this.checked);'  />全选" FooterText="全选">
                                        
    <ItemTemplate>
                                            
    <input type="checkbox" id="checkboxname" name="checkboxname" value='<%# DataBinder.Eval(Container.DataItem, "id")%>' onclick='SingleCheckJs();' />
                                        
    </ItemTemplate>
                                    
    </asp:TemplateField>
                                    
    <asp:TemplateField HeaderText="单选" FooterText="单选">
                                        
    <ItemTemplate>
                                            
    <input type="radio" id="RadioName" name="RadioName" value='<%# Eval("id")%>' />
                                        
    </ItemTemplate>
                                    
    </asp:TemplateField>
                                    
    <asp:TemplateField HeaderText="自增列" FooterText="自增列">
                                        
    <ItemTemplate>
                                            
    <%# (Container.DataItemIndex+1).ToString()%>
                                        
    </ItemTemplate>
                                    
    </asp:TemplateField>
                                    
    <asp:BoundField HeaderText="姓名" FooterText="姓名" DataField="name" SortExpression="name" />
                                    
    <asp:BoundField HeaderText="身份证号" FooterText="身份证号" DataField="card" SortExpression="card" />
                                    
    <asp:BoundField HeaderText="价格" FooterText="价格" DataField="price" DataFormatString="{0:¥#,##0.00}"
                                        HtmlEncode
    ="False" SortExpression="price" />
                                    
    <asp:BoundField HeaderText="数字" FooterText="数字" DataField="price" DataFormatString="{0:0.00}"
                                        HtmlEncode
    ="False" SortExpression="price" />
                                    
    <asp:BoundField HeaderText="建立时间" FooterText="建立时间" DataField="createdate" DataFormatString="{0:yyyy年MM月dd日 hh时mm分ss秒}"
                                        HtmlEncode
    ="False" SortExpression="createdate" />
                                
    </Columns>
                                
    <RowStyle BackColor="#F7F6F3" ForeColor="#333333" />
                                
    <EditRowStyle BackColor="#999999" />
                                
    <SelectedRowStyle BackColor="#E2DED6" Font-Bold="True" ForeColor="#333333" />
                                
    <PagerStyle BackColor="#284775" ForeColor="White" HorizontalAlign="Center" />
                                
    <AlternatingRowStyle BackColor="White" ForeColor="#284775" />
                                
    <PagerSettings Visible="False" />
                                
    <FooterStyle Font-Bold="True" />
                                
    <HeaderStyle Font-Bold="False" Font-Italic="False" />
                            
    </asp:GridView>
                        
    </td>
                    
    </tr>
                    
    <tr>
                        
    <td align="center" style="height: 25px">
                            
    <asp:LinkButton ID="btnFirst" CommandArgument="first" OnClick="PagerButtonClick"
                                runat
    ="server">首 页</asp:LinkButton>
                            
    <asp:LinkButton ID="btnPrev" CommandArgument="prev" OnClick="PagerButtonClick" runat="server">上一页</asp:LinkButton>
                            
    <asp:LinkButton ID="btnNext" CommandArgument="next" OnClick="PagerButtonClick" runat="server">下一页</asp:LinkButton>
                            
    <asp:LinkButton ID="btnLast" CommandArgument="last" OnClick="PagerButtonClick" runat="server">尾 页</asp:LinkButton>
                            
    <asp:Label ID="LblCurrentIndex" runat="server"></asp:Label>
                            
    <asp:Label ID="LblPageCount" runat="server"></asp:Label>
                            
    <asp:Label ID="LblRecordCount" runat="server"></asp:Label></td>
                    
    </tr>
                    
    <tr>
                        
    <td>
                            
    <asp:Button ID="Button2" runat="server" Text="checkbox得到选择的行" OnClick="Button2_Click">
                            
    </asp:Button>
                            
    <asp:Button ID="Button1" runat="server" Text="radio得到选择的行" OnClick="Button1_Click"></asp:Button>
                        
    </td>
                    
    </tr>
                
    </table>
            
    </div>
        
    </form>
    </body>
    </html>

     2.后台代码:

    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 web_testgridview2 : System.Web.UI.Page
    {
        
    protected void Page_Load(object sender, EventArgs e)
        
    {
            Button2.Attributes[
    "onclick"= "return slcNo_click();";
            GridViewBind(
    "");
        }


        
    private void GridViewBind(string Sqlsort)
        
    {
            
    string connStr = "server=xww;database=testdb;uid=sa;pwd=admin";
            
    string SqlStr = "Select * FROM test01 where id<1000" + Sqlsort;
            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();

                LblCurrentIndex.Text 
    = "第 " + (GridView1.PageIndex + 1).ToString() + " 页";
                LblPageCount.Text 
    = "共 " + GridView1.PageCount.ToString() + " 页";
                LblRecordCount.Text 
    = "总共 " + ds.Tables[0].Rows.Count.ToString() + " 条";
                
    if (ds.Tables[0].Rows.Count == 0)
                
    {
                    btnFirst.Visible 
    = false;
                    btnPrev.Visible 
    = false;
                    btnNext.Visible 
    = false;
                    btnLast.Visible 
    = false;

                    LblCurrentIndex.Visible 
    = false;
                    LblPageCount.Visible 
    = false;
                    LblRecordCount.Visible 
    = false;
                }

                
    else if (GridView1.PageCount == 1)
                
    {
                    btnFirst.Visible 
    = false;
                    btnPrev.Visible 
    = false;
                    btnNext.Visible 
    = false;
                    btnLast.Visible 
    = false;
                }


                
    // 计算生成分页页码,分别为:"首 页" "上一页" "下一页" "尾 页"
                btnFirst.CommandName = "1";
                btnPrev.CommandName 
    = (GridView1.PageIndex == 0 ? "1" : GridView1.PageIndex.ToString());

                btnNext.CommandName 
    = (GridView1.PageCount == 1 ? GridView1.PageCount.ToString() : (GridView1.PageIndex + 2).ToString());
                btnLast.CommandName 
    = GridView1.PageCount.ToString();
                
    //
            }

            
    catch (Exception ex)
            
    {
                Response.Write(
    "数据库错误,错误原因:" + ex.Message);
                Response.End();
            }

        }

        
    protected void PagerButtonClick(object sender, EventArgs e)
        
    {
            GridView1.PageIndex 
    = Convert.ToInt32(((LinkButton)sender).CommandName) - 1;
            GridViewBind(
    "");
        }


        
    protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
        
    {
            e.Row.Attributes[
    "onmouseover"= "ItemOver(this)";
        }


        
    protected void Button2_Click(object sender, EventArgs e)
        
    {
            
    string str = "";
            
    string[] ckb = null;

            str 
    = Request.Form.Get("checkboxname");
            ckb 
    = str.Split(new char[] ',' });

            Response.Write(
    "直接在页面中得到的值为:" + str + "<br>");

            Response.Write(
    "处理后存放在数组中,如下:<br>");
            
    for (int i = 0; i < ckb.Length; i++)
            
    {
                Response.Write(
    "ckb[" + i + "]的值为:" + ckb[i] + "<br>");
            }

        }

        
    protected void Button1_Click(object sender, EventArgs e)
        
    {
            Response.Write(Request.Form.Get(
    "RadioName"));
        }

        
    protected void GridView1_Sorting(object sender, GridViewSortEventArgs e)
        
    {
            
    string sql = "";

            
    if (ViewState["SortDirection"== null || ViewState["SortDirection"].ToString().CompareTo(""== 0)
            
    {
                ViewState[
    "SortDirection"= " desc";
            }

            
    else
                ViewState[
    "SortDirection"= "";

            sql 
    = " order by " + e.SortExpression + ViewState["SortDirection"];

            GridViewBind(sql);
        }

    }

    3.数据库代码:

    Create TABLE [dbo].[test01] (
        
    [id] [decimal](180IDENTITY (11NOT NULL ,
        
    [name] [varchar] (50) COLLATE Chinese_PRC_CI_AS NULL ,
        
    [card] [varchar] (50) COLLATE Chinese_PRC_CI_AS NULL ,
        
    [createdate] [datetime] NULL ,
        
    [price][money] null
    ON [PRIMARY]
    GO

    Alter TABLE [dbo].[test01] ADD 
        
    CONSTRAINT [DF_test01_createdate] DEFAULT (getdate()) FOR [createdate],
        
    CONSTRAINT [PK_test01] PRIMARY KEY  CLUSTERED 
        (
            
    [id]
        )  
    ON [PRIMARY] 
    GO
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  • 原文地址:https://www.cnblogs.com/sunfeiwto/p/1334882.html
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