一个很初级的问题

xialff 2003-08-19 05:16:22

请问：
我在前端页面里有两个控件，一个TextBox输入框，一个日历控件

我想在前端页面里，鼠标移到TextBox输入框中，产生事件调用后端程序文件中的函数来隐藏日历控件，请问我应该如何实现？

TextBox默认的没有ONMOUSEOVER这个事件，请问该如何实现以上功能？

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alphawin 2003-08-20

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没有必要用ASP，直接用C#方便
TextBox1.Attributes.Add("onmouseover","document.all.Calendar1.style.visibility='hidden'");

xialff 2003-08-20

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还有顺便问一下，怎样再DATAGRID中实现单选？我将单选按钮的groupname设成一样也不行啊

xialff 2003-08-20

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那么请问是不是就无法象asp里的RS一样，可以实现客户端调用服务端的程序了呢？

luckysusan 2003-08-19

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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD>
<title>WebForm6</title>
<meta name="GENERATOR" content="Microsoft Visual Studio .NET 7.0">
<meta name="CODE_LANGUAGE" content="Visual Basic 7.0">
<meta name="vs_defaultClientScript" content="JavaScript">
<meta name="vs_targetSchema" content="http://schemas.microsoft.com/intellisense/ie5">
</HEAD>
<body MS_POSITIONING="GridLayout">
<form id="Form1" method="post" runat="server">
<FONT face="宋体">
<asp:TextBox onmousemove="javascript:document.all.Panel1.style.visibility='hidden';" onmouseout="javascript:document.all.Panel1.style.visibility='visible';" id="TextBox1" style="Z-INDEX: 101; LEFT: 260px; POSITION: absolute; TOP: 124px" runat="server" Width="110px" Height="28px"></asp:TextBox>
<asp:Panel id="Panel1" style="Z-INDEX: 102; LEFT: 413px; POSITION: absolute; TOP: 85px" runat="server" Width="208px" Height="212px">
<asp:Calendar id="Calendar1" runat="server" Width="218px"></asp:Calendar>
</asp:Panel></FONT>
</form>
</body>
</HTML>

seesea125 2003-08-19

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支持kent

liq1979 2003-08-19

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给你一段代码,希望能帮助你
第一步建立一个UserControl控件：
它的代码如下(popUpCalendar.ascx)：
<%@ Control Language="c#" AutoEventWireup="false" Codebehind="popUpCalendar.ascx.cs" Inherits="CalendarExample.popUpCalendar" TargetSchema="http://schemas.microsoft.com/intellisense/ie5" %>
<asp:panel id="pnlCalendar" style="Z-INDEX: 101; LEFT: 0px; POSITION: absolute; TOP: 0px" Width="301px" Height="163px" runat="server">
<asp:Calendar id="Calendar1" Width="307px" Height="164px" runat="server" BackColor="White" BorderColor="Black" BorderStyle="Solid" NextMonthText="<IMG src="monthright.gif" border="0">" PrevMonthText="<IMG src="monthleft.gif" border="0">">
<TodayDayStyle BackColor="#FFFFC0"></TodayDayStyle>
<DayStyle Font-Size="8pt" Font-Names="Arial"></DayStyle>
<DayHeaderStyle Font-Size="10pt" Font-Underline="True" Font-Names="Arial" BorderStyle="None" BackColor="#E0E0E0"></DayHeaderStyle>
<SelectedDayStyle Font-Size="8pt" Font-Names="Arial" Font-Bold="True" ForeColor="White" BackColor="Navy"></SelectedDayStyle>
<TitleStyle Font-Size="10pt" Font-Names="Arial" Font-Bold="True" ForeColor="White" BackColor="Navy"></TitleStyle>
<OtherMonthDayStyle ForeColor="Gray"></OtherMonthDayStyle>
</asp:Calendar>
</asp:panel>
对就的codebehind文件如下(popUpCalendar.ascx.cs)：
namespace CalendarExample
{
using System;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;

/// <summary>
/// popUpCalendar 的摘要说明。
/// </summary>
public abstract class popUpCalendar : System.Web.UI.UserControl
{
protected System.Web.UI.WebControls.Calendar Calendar1;
protected System.Web.UI.WebControls.Panel pnlCalendar;

private void Page_Load(object sender, System.EventArgs e)
{
// 在此处放置用户代码以初始化页面
}

#region Web Form Designer generated code
override protected void OnInit(EventArgs e)
{
//
// CODEGEN：该调用是 ASP.NET Web 窗体设计器所必需的。
//
InitializeComponent();
base.OnInit(e);
}

/// 设计器支持所需的方法 - 不要使用
/// 代码编辑器修改此方法的内容。
/// </summary>
private void InitializeComponent()
{
this.Calendar1.SelectionChanged += new System.EventHandler(this.Calendar1_SelectionChanged);
this.Load += new System.EventHandler(this.Page_Load);
}
#endregion
public void displayCalendar( string sCalToolText, DateTime dSelectedDate, string sDateFieldName , int iTop , int iLeft )
{
if (pnlCalendar.Visible == false)
{
pnlCalendar.Style["top"] = iTop.ToString ();
pnlCalendar.Style["left"] = iLeft.ToString ();
Calendar1.SelectedDate = dSelectedDate;
Calendar1.VisibleDate = dSelectedDate;
Calendar1.ToolTip = sCalToolText;
Calendar1.Attributes["SelectedField"] = sDateFieldName;
pnlCalendar.Visible = true;
}
else
hideCalendar();
}

public void hideCalendar()
{
pnlCalendar.Visible = false;
}

private void Calendar1_SelectionChanged(object sender, System.EventArgs e)
{
TextBox txtDate;
txtDate = (TextBox)Page.FindControl(Calendar1.Attributes["SelectedField"]);
txtDate.Text = Calendar1.SelectedDate.ToShortDateString();
hideCalendar();
}
}
}

　　第二步，在asp.net文件里调用这个UserControl；
它的代码如下(dispCalendar.aspx)：
<%@ Register TagPrefix="sk" TagName="popUpCalendar" src="popUpCalendar.ascx"%>
<%@ Page language="c#" Codebehind="dispCalendar.aspx.cs" AutoEventWireup="false" Inherits="CalendarExample.WebForm1" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" >
<HTML>
<HEAD>
<title>WebForm1</title>
<meta content="Microsoft Visual Studio 7.0" name="GENERATOR">
<meta content="C#" name="CODE_LANGUAGE">
<meta content="JavaScript" name="vs_defaultClientScript">
<meta content="http://schemas.microsoft.com/intellisense/ie5" name="vs_targetSchema">
</HEAD>
<body MS_POSITIONING="GridLayout">
<form id="Form1" method="post" runat="server">
<sk:popupcalendar id="myCalendar" runat="server"></sk:popupcalendar>
<table>
<tr>
<td width="75">
Select Date:
</td>
<td>
<asp:TextBox id="txtStartDate" runat="server" Width="86px"></asp:TextBox>
</td>
<td>
<asp:ImageButton id="Button1" runat="server" ImageUrl="calendar.gif"></asp:ImageButton>
</td>
</tr>
</table>
</form>
</body>
</HTML>
对应的codebehind文件如下(dispCalendar.aspx.cs)：
using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;

namespace CalendarExample
{
/// <summary>
/// WebForm1 的摘要说明。
/// </summary>
public class WebForm1 : System.Web.UI.Page
{
protected System.Web.UI.WebControls.TextBox txtStartDate;
protected System.Web.UI.WebControls.ImageButton Button1;
protected popUpCalendar myCalendar;

private void Page_Load(object sender, System.EventArgs e)
{
if (!IsPostBack)
myCalendar.hideCalendar();// 在此处放置用户代码以初始化页面
}

#region Web Form Designer generated code
override protected void OnInit(EventArgs e)
{
//
// CODEGEN：该调用是 ASP.NET Web 窗体设计器所必需的。
//
InitializeComponent();
base.OnInit(e);
}

/// <summary>
/// 设计器支持所需的方法 - 不要使用代码编辑器修改
/// 此方法的内容。
/// </summary>
private void InitializeComponent()
{
this.Button1.Click += new System.Web.UI.ImageClickEventHandler(this.Button1_Click);
this.Load += new System.EventHandler(this.Page_Load);

}
#endregion

private void Button1_Click(object sender, System.Web.UI.ImageClickEventArgs e)
{
DateTime dSelDate;
try
{
dSelDate=DateTime.Parse(txtStartDate.Text);
}
catch
{
dSelDate=DateTime.Now;
}
myCalendar.displayCalendar("Select a start date", dSelDate,"txtStartDate", 22, 215);
}
}
}

chnking 2003-08-19

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protected System.Web.UI.WebControls.TextBox TextBox1;
protected System.Web.UI.WebControls.Calendar Calendar1;

public void Page_Load(object sender, System.EventArgs e)
{
TextBox1.Attributes.Add("onmouseover","document.all.Calendar1.style.visibility='hidden'");
}