如何隐藏和显示 Gridview 表？答案

【问题标题】：How to Hide and Show Gridview table?如何隐藏和显示 Gridview 表？
【发布时间】：2016-08-06 04:48:33
【问题描述】：

我正在使用 asp.net gridview 和 ajax 日历扩展器。例如，用户选择像 19/8/16 这样的日期，那么它将仅在 gridview 表上显示 19/8/16 的日期。但问题是我不知道为 gridview 隐藏和显示什么代码。任何人都知道如何隐藏和显示gridview？

输出：

Asp.net 代码：

<%@ Page Title="" Language="C#" MasterPageFile="~/Site.Master" AutoEventWireup="true" CodeBehind="ViewAppliedLeaveByDate.aspx.cs" Inherits="BookReservation.ViewLeave.ViewAppliedLeaveByDate" %>
<asp:Content ID="Content1" ContentPlaceHolderID="head" runat="server">
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="MainContentPlaceHolder" runat="server">
    <asp:ScriptManager ID="ScriptManager1" runat="server">
    </asp:ScriptManager>

    <h3>View Leave Application By Start Date</h3>
    <asp:Label ID="lblSearchStartDate" runat="server" CssClass="labelClass" Text="Search By Start Date:"></asp:Label>
    <asp:TextBox ID="tbSearchStartDate" runat="server"></asp:TextBox>
    <ajaxToolkit:CalendarExtender ID="tbSearchStartDate_CalendarExtender" runat="server" TargetControlID="tbSearchStartDate" />
    <br />
    <br />
    <asp:GridView ID="gvVALD" runat="server" AutoGenerateColumns="False" DataSourceID="SqlDSSearchStartDate" >
        <Columns>
            <asp:BoundField DataField="StaffName" HeaderText="StaffName" SortExpression="StaffName" />
            <asp:BoundField DataField="Type" HeaderText="Type" SortExpression="Type" />
            <asp:BoundField DataField="StartDate" HeaderText="StartDate" SortExpression="StartDate" />
            <asp:BoundField DataField="Start Leave Period" HeaderText="Start Leave Period" SortExpression="Start Leave Period" />
            <asp:BoundField DataField="EndDate" HeaderText="EndDate" SortExpression="EndDate" />
            <asp:BoundField DataField="End Leave Period" HeaderText="End Leave Period" SortExpression="End Leave Period" />
            <asp:BoundField DataField="NumDays" HeaderText="NumDays" SortExpression="NumDays" />
        </Columns>

    </asp:GridView>
    <br />
    <asp:SqlDataSource ID="SqlDSSearchStartDate" runat="server" ConnectionString="<%$ ConnectionStrings:LeaveManagementCS %>" SelectCommand="SELECT Staff.StaffName, LeaveType.Type, LeaveApplications.StartDate, LeavePeriod.Description AS [Start Leave Period], LeaveApplications.EndDate, LeavePeriod.Description AS [End Leave Period], LeaveApplications.NumDays FROM LeaveApplications INNER JOIN LeavePeriod ON LeaveApplications.StartLeavePeriodId = LeavePeriod.LeavePeriodId AND LeaveApplications.EndLeavePeriodId = LeavePeriod.LeavePeriodId INNER JOIN LeaveType ON LeaveApplications.LeaveTypeId = LeaveType.Id INNER JOIN Staff ON LeaveApplications.StaffId = Staff.StaffId"></asp:SqlDataSource>
</asp:Content>

Asp.net.cs 代码：

public partial class ViewAppliedLeaveByDate : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {

        }
    }

【问题讨论】：

您需要在数据库中查询您在问题中提到的日期，并且您需要在 tbSearchStartDate 文本更改事件上重新填充网格视图
您要根据哪个条件隐藏？

标签： c# asp.net gridview visual-studio-2015

【解决方案1】：

在文本框“tbSearchStartDate”上创建一个 textchanged 事件，将 autopostback 属性设置为 true，然后通过向查询提供您选择的日期再次绑定网格

【讨论】：

【解决方案2】：

只需将 GridView 控件的 Visible 属性设置为显示\隐藏即可：

gvVALD.Visible = false;

【讨论】：