C#之Gridview&dropdownlist控件应用

第一部份：前端代码：

<%@ Page Title="" Language="C#" MasterPageFile="MasterPageSys.master" AutoEventWireup="true" CodeFile="sysCustomCName.aspx.cs" Inherits="sysCustomCName" %>

<asp:Content ID="Content1" ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server">
<div class="container-fluid">
<ol class="breadcrumb">
<li class="active">您的位置：</li>
<li><a href="sysCustomInfo.aspx">客户信息编辑</a></li>
<li><a href="sysCustomCName.aspx">客户联系人编辑</a></li>
</ol>
</div>
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder2" Runat="Server">
<div class="container-fluid">
<div class="col-md-1"></div>
<div class="col-md-10" style="font-size: small; text-align: center;">
<div class="bg-primary">客户联系人编辑</div>

<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" DataKeyNames="cuContactID"
AllowPaging="True" EmptyDataText="没有数据记录！！"
OnRowDeleting="GridView1_RowDeleting" OnRowEditing="GridView1_RowEditing"
OnRowUpdating="GridView1_RowUpdating" OnRowCancelingEdit="GridView1_RowCancelingEdit"
OnPageIndexChanging="GridView1_PageIndexChanging"
OnRowDataBound="GridView1_RowDataBound"
CssClass= "table table-striped table-bordered table-condensed" >
<Columns>
<asp:BoundField DataField="cuContactID" HeaderText="序号" ReadOnly="True" SortExpression="cuContactID" InsertVisible="False" HeaderStyle-Width="60" ControlStyle-Width="60" >
</asp:BoundField>
<asp:TemplateField HeaderText="客户简称" HeaderStyle-Width="100" ControlStyle-Width="100">
<ItemTemplate>
<asp:HiddenField ID="hfID" runat="server" Value='<%# Eval("cuContactID") %>' />
<%# Eval("customName")%>
</ItemTemplate>
<EditItemTemplate>
<asp:HiddenField Value='<%#Eval("cuContactID") %>' ID="hfID" runat=server/>
<asp:HiddenField ID="hfcustomID" runat="server" Value='<%# Eval("customID") %>' />
<asp:DropDownList ID="ddlcustomID" runat="server" EnableViewState="True" AppendDataBoundItems="False" AutoPostBack="False" >
</asp:DropDownList>
</EditItemTemplate>
</asp:TemplateField>
<asp:BoundField DataField="cuConName" HeaderText="姓名" SortExpression="cuConName" HeaderStyle-Width="100" ControlStyle-Width="100" >
</asp:BoundField>
<asp:BoundField DataField="cuConDust" HeaderText="职务" SortExpression="cuConDust" HeaderStyle-Width="80" ControlStyle-Width="80" >
</asp:BoundField>
<asp:BoundField DataField="cuConMob" HeaderText="手机" SortExpression="cuConMob" HeaderStyle-Width="100" ControlStyle-Width="100" >
</asp:BoundField>
<asp:BoundField DataField="cuConTel" HeaderText="座机" SortExpression="cuConTel" HeaderStyle-Width="100" ControlStyle-Width="100" >
</asp:BoundField>
<asp:BoundField DataField="cuConMail" HeaderText="邮箱" SortExpression="cuConMail" HeaderStyle-Width="100" ControlStyle-Width="100" >
</asp:BoundField>
<asp:BoundField DataField="cuConQQ" HeaderText="QQ" SortExpression="cuConQQ" HeaderStyle-Width="100" ControlStyle-Width="100" >
</asp:BoundField>
<asp:BoundField DataField="cuConRemark" HeaderText="备注" SortExpression="cuConRemark" HeaderStyle-Width="200" ControlStyle-Width="200" >
</asp:BoundField>
<asp:CommandField HeaderText="删除" ShowDeleteButton="True" HeaderStyle-Width="40" HeaderStyle-HorizontalAlign="Center" ControlStyle-Width="40" >
</asp:CommandField>
<asp:CommandField HeaderText="编辑" ShowEditButton="True" HeaderStyle-Width="60" HeaderStyle-HorizontalAlign="Center" ControlStyle-Width="60" >
</asp:CommandField>
</Columns>
<EditRowStyle BackColor="#999999" />
<FooterStyle BackColor="#5D7B9D" ForeColor="White" Font-Bold="True" />
<HeaderStyle BackColor="#5D7B9D" Font-Bold="True" ForeColor="White" />
<PagerStyle BackColor="#284775" ForeColor="White" HorizontalAlign="Center" />
<RowStyle BackColor="#F7F6F3" ForeColor="#333333" />
<SelectedRowStyle BackColor="#E2DED6" Font-Bold="True" ForeColor="#333333" />
<SortedAscendingCellStyle BackColor="#E9E7E2" />
<SortedAscendingHeaderStyle BackColor="#506C8C" />
<SortedDescendingCellStyle BackColor="#FFFDF8" />
<SortedDescendingHeaderStyle BackColor="#6F8DAE" />
</asp:GridView>

</div>
<div class="col-md-1"></div>
</div>
<div class="container-fluid" style="text-align: center; margin-top: 20px;">
<asp:Button ID="BtnNewCustom" runat="server" Text="新增客户" PostBackUrl="sysCustomNew.aspx" />
<asp:Button ID="BtnEditCAdd" runat="server" Text="编辑收货地址" PostBackUrl="sysCustomCAdd.aspx" />
</div>

</asp:Content>

第二部份：后端代码

using System;
using System.Collections.Generic;
using System.Data;
using System.Configuration;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.Security;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;

public partial class sysCustomCName : System.Web.UI.Page
{
int reValue;//用于保存返回值。返回值为-1（用户名存在），0（失败），1（成功），2（用户名不存在）
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
GridviewBind();
}
}
public void GridviewBind()
{
//DDLcustomID.Items.Clear();
//实例化公共类的对象
DB db = new DB();
//定义SQL语句
string sqlstr = "SELECT BaCuContact.cuContactID,BaCuContact.customID, BaCuContact.cuConName, BaCuContact.cuConDust,BaCuContact.cuConMob,BaCuContact.cuConTel,BaCuContact.cuConMail,BaCuContact.cuConQQ,BaCuContact.cuConRemark,BaCustom.customName FROM BaCuContact INNER JOIN BaCustom ON BaCuContact.customID = BaCustom.customID order by BaCuContact.customID";
//实例化数据集DataTable用于存储查询结果
DataTable dt = db.reDt(sqlstr);
//绑定DropDownListt控件
GridView1.DataSource = dt;//设置数据源，用于填充控件中的项的值列表
GridView1.DataBind();//将控件及其所有子控件绑定到指定的数据源

}

//分页选择、编辑、更新功能
protected void GridView1_PageIndexChanging(object sender, GridViewPageEventArgs e)
{
//分页功能:设置相关属性。在源视窗中手动添加 AllowPaging = "True" PageSize = "10"
GridView1.PageIndex = e.NewPageIndex;
GridviewBind();
}
protected void GridView1_SelectedIndexChanging(object sender, GridViewSelectEventArgs e)
{
GridView1.SelectedIndex = e.NewSelectedIndex; //实现选择功能
}
protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e)
{
GridView1.EditIndex = e.NewEditIndex; //实现编辑功能
GridviewBind();

}
protected void GridView1_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)
{
GridView1.EditIndex = -1;//实现取消编辑功能
GridviewBind();
}

protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)
{
DB db = new DB();
string cuContactID = ((HiddenField)GridView1.Rows[e.RowIndex].FindControl("hfID")).Value;
string customID = ((DropDownList)GridView1.Rows[e.RowIndex].FindControl("ddlcustomID")).SelectedValue;
string cuConName = ((TextBox)(GridView1.Rows[e.RowIndex].Cells[2].Controls[0])).Text.ToString();
string cuConDust = ((TextBox)(GridView1.Rows[e.RowIndex].Cells[3].Controls[0])).Text.ToString();
string cuConMob = ((TextBox)(GridView1.Rows[e.RowIndex].Cells[4].Controls[0])).Text.ToString();
string cuConTel = ((TextBox)(GridView1.Rows[e.RowIndex].Cells[5].Controls[0])).Text.ToString();
string cuConMail = ((TextBox)(GridView1.Rows[e.RowIndex].Cells[6].Controls[0])).Text.ToString();
string cuConQQ = ((TextBox)(GridView1.Rows[e.RowIndex].Cells[7].Controls[0])).Text.ToString();
string cuConRemark = ((TextBox)(GridView1.Rows[e.RowIndex].Cells[8].Controls[0])).Text.ToString();
string cmdStr = "UPDATE BaCuContact SET customID='" + customID + "',cuConName = '" + cuConName + "', cuConDust = '" + cuConDust + "', cuConMob = '" + cuConMob + "', cuConTel = '" + cuConTel + "', cuConMail = '" + cuConMail + "', cuConQQ = '" + cuConQQ + "', cuConRemark = '" + cuConRemark + "' WHERE cuContactID='" + cuContactID + "'";
reValue = db.sqlEx(cmdStr);
if (reValue == 1)
{

GridView1.EditIndex = -1;
GridviewBind();
}
else if (reValue == 0)
{
Response.Write("<script>alert('更新客户联系人资料失败！！');</script>");
}

}
//删除功能
protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e)
{
DB db = new DB();
string cmdStr = "delete from BaCuContact where cuContactID='" + GridView1.DataKeys[e.RowIndex].Value.ToString() + "'";
reValue = db.sqlEx(cmdStr);
if (reValue == 1) {

GridView1.EditIndex = -1;
GridviewBind(); }
else if (reValue == 0)
{
Response.Write("<script>alert('删除操作失败！！');</script>");

}

}
/// <summary>
/// 行绑定时的处理，其中包括DropDownList的可选项绑定，和选中当前可选项
/// </summary>
protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.DataRow && ((e.Row.RowState & DataControlRowState.Edit) > 0))
{

DropDownList ddlcustomID = (DropDownList)e.Row.FindControl("ddlcustomID") as DropDownList;

//绑定DropDownList数据
DB db = new DB();
string sqlddl = "SELECT [customID], [customName] FROM [BaCustom] ";
DataTable dt = db.reDt(sqlddl);
//绑定DropDownListt控件
ddlcustomID.DataSource = dt;
ddlcustomID.DataTextField = "customName";
ddlcustomID.DataValueField = "customID";
ddlcustomID.DataBind();
//选中DropDownList
ddlcustomID.SelectedValue = ((HiddenField)e.Row.FindControl("hfcustomID")).Value;
}
/// 删除操作的提示
//如果是绑定数据行
if (e.Row.RowType == DataControlRowType.DataRow)
{
if (e.Row.RowState == DataControlRowState.Normal || e.Row.RowState == DataControlRowState.Alternate)
{
((LinkButton)e.Row.Cells[9].Controls[0]).Attributes.Add("onclick", "javascript:return confirm('你确认要删除:" + e.Row.Cells[2].Text + "吗?')");
}
}
/// 鼠标移到GridView某一行时改变该行的背景色
if (e.Row.RowType == DataControlRowType.DataRow)
{
//鼠标经过时，行背景色变
e.Row.Attributes.Add("onmouseover", "this.style.backgroundColor='#00A9FF'");
//鼠标移出时，行背景色变
e.Row.Attributes.Add("onmouseout", "this.style.backgroundColor='#FFFFFF'");

}

}
}

C#之Gridview&dropdownlist控件应用

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