Asp.NET user control date validation - asp.net

Question

I have created a user control which has 2 date controls(start date and end date). Now in my aspx page I am using the same user control twice with id as parent and child. Now i want that the dates in the child user control should be within the dates provided in the parent user control.
Please refer to the below code snippet, i want the dates selected to be within the range of the dates.
ASCX Page:
<%# Control Language="C#" AutoEventWireup="true" CodeBehind="EffectiveDate.ascx.cs"
Inherits="UserControlDemo.EffectiveDate" %>
<%# Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="ajaxtoolkit" %>
<asp:ScriptManager runat="server" ID="scriptmanger1" EnablePageMethods="true">
</asp:ScriptManager>
<table id="Table5" width="99%" cellspacing="5">
<tr>
<td valign="middle" width="20%">
<asp:Label ID="Label4" runat="server" Style="white-space: nowrap;" Text="Effective Start Date"></asp:Label>
</td>
<td valign="middle">
<asp:TextBox ID="attPrdStartdate" runat="server"></asp:TextBox>
<asp:Label ID="Label8" runat="server" ForeColor="Red" Text="*"></asp:Label>
<asp:ImageButton ID="Image3" runat="server" ImageUrl="/Images/CalendarImage.png"
Style="margin-bottom: -5px" />
<ajaxtoolkit:FilteredTextBoxExtender ID="FilteredTextBoxExtender5" runat="server"
TargetControlID="attPrdStartdate" ValidChars="1234567890/" />
<ajaxtoolkit:CalendarExtender ID="CalendarExtender3" runat="server" TargetControlID="attPrdStartdate"
PopupButtonID="Image3" Format="MM/dd/yyyy">
</ajaxtoolkit:CalendarExtender>
<asp:CompareValidator ID="CompareValidator5" runat="server" ControlToValidate="attPrdStartdate"
Display="Dynamic" ErrorMessage="Invalid Date" ForeColor="Red" Operator="DataTypeCheck"
Type="Date" Style="font-size: smaller">
</asp:CompareValidator>
<asp:RangeValidator ID="RangeValidator1" runat="server" ControlToValidate="attPrdStartdate" Type="Date"
Display="Dynamic" ErrorMessage="Dates out of range" ForeColor="Red" EnableClientScript="False"></asp:RangeValidator>
</td>
</tr>
<tr>
<td valign="middle">
<asp:Label ID="Label5" runat="server" Style="white-space: nowrap;" Text="Effective End Date"></asp:Label>
</td>
<td valign="middle">
<asp:TextBox ID="attPrdEnddate" runat="server"></asp:TextBox>
<asp:Label ID="Label9" runat="server" ForeColor="Red" Text="*"></asp:Label>
<ajaxtoolkit:FilteredTextBoxExtender ID="FilteredTextBoxExtender6" runat="server"
TargetControlID="attPrdEnddate" ValidChars="1234567890/" />
<ajaxtoolkit:CalendarExtender ID="CalendarExtender4" runat="server" TargetControlID="attPrdEnddate"
PopupButtonID="Image4" Format="MM/dd/yyyy">
</ajaxtoolkit:CalendarExtender>
<asp:ImageButton ID="Image4" runat="server" ImageUrl="/Images/CalendarImage.png"
Style="margin-bottom: -5px" />
<asp:CompareValidator ID="CompareValidator6" runat="server" ControlToValidate="attPrdEnddate"
Display="Dynamic" ErrorMessage="Invalid Date" ForeColor="Red" ControlToCompare="attPrdStartdate"
Operator="GreaterThan" Type="Date" Style="font-size: smaller">
</asp:CompareValidator>
<asp:RangeValidator ID="RangeValidator2" runat="server" ControlToValidate="attPrdEnddate" Type="Date"
Display="Dynamic" ErrorMessage="Dates out of range" ForeColor="Red" EnableClientScript="False"></asp:RangeValidator>
</td>
</tr>
<tr>
<td colspan="2">
<asp:Label runat="server" ID="errlblBaseln" Text="" ForeColor="Red" Font-Size="smaller"></asp:Label>
</td>
</tr>
</table>
ASCX Code Behind:
namespace UserControlDemo
{
public partial class EffectiveDate : System.Web.UI.UserControl
{
protected void Page_Load(object sender, EventArgs e)
{
RangeValidator1.MaximumValue = endDate.ToShortDateString();
RangeValidator1.MinimumValue = startDate.ToShortDateString();
RangeValidator2.MaximumValue = endDate.ToShortDateString();
RangeValidator2.MinimumValue = startDate.ToShortDateString();
}
private DateTime startDate;
private DateTime endDate;
public DateTime StartDate
{
get { return startDate; }
set { startDate = value; }
}
public DateTime EndDate
{
get { return endDate; }
set { endDate = value; }
}
}
}
my aspx page:
<uc:EfectiveDate ID="MyDates" runat="server" StartDate="01/01/2013" EndDate="12/12/2013" />

Answer 1

I think you are trying to do something like this.
Parent
<%# Control Language="C#" AutoEventWireup="true" CodeBehind="Parent.ascx.cs" Inherits="StackOverFlow.Parent" %>
<table>
<tr>
<td>Parent Start Date </td>
<td>
<asp:TextBox runat="server" ID="txtStartDate" />
</td>
</tr>
<tr>
<td>Parent End Date </td>
<td>
<asp:TextBox runat="server" ID="txtEndDate" />
</td>
</tr>
</table>
Child
<%# Control Language="C#" AutoEventWireup="true" CodeBehind="Child.ascx.cs" Inherits="StackOverFlow.Child" %>
<table>
<tr>
<td>Child Start Date </td>
<td>
<asp:TextBox runat="server" ID="txtStartDate" />
</td>
</tr>
<tr>
<td>Child End Date </td>
<td>
<asp:TextBox runat="server" ID="txtEndDate" />
</td>
</tr>
</table>
Your Page
<%# Page Language="C#" AutoEventWireup="true" CodeBehind="WebForm1.aspx.cs" Inherits="StackOverFlow.WebForm1" %>
<%# Register TagPrefix="p" Src="~/Parent.ascx" TagName="Parent" %>
<%# Register TagPrefix="c" Src="~/Child.ascx" TagName="Child" %>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server">
<div>
<table>
<tr>
<td>
<p:Parent ID="parent" runat="server"></p:Parent>
</td>
</tr>
<tr>
<td>
<c:Child ID="child" runat="server"></c:Child>
</td>
</tr>
<tr><td>
<asp:Button Text="Compare" ID="btnCompare" runat="server" OnClick="btnCompare_Click" /></td></tr>
</table>
</div>
</form>
</body>
</html>
Code behind
protected void btnCompare_Click(object sender, EventArgs e)
{
TextBox txtParentStartDate = (TextBox)parent.FindControl("txtStartDate");
if (txtParentStartDate!=null)
{
DateTime dtParentStartDate = Convert.ToDateTime(txtParentStartDate.Text.Trim());
}
//likewise get other dates and compare
}
Hope this will help you.