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Web Forms :: Compare Validator For 2 Dates Textboxes

I want to compare 2 textboes with date in such a way that one must be less than other. Compare validator is not working Here is the code


View 7 Replies (Posted: Jun 02, 2010 02:44 PM)

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Web Forms :: Compare Two Dates In "dd Mmm Yyyy" Format In Compare Validator
I am trying tocheck for a condition such that a date in an input control (textbox) is not greater from a date 1 years from current date(exactly) and also it should not be less than a date 1 year back from current date. for eg. iftoday's date is "21/dec/1990" then usen cannot enter a date in textbox which is less than 21/dec/89 and it should not be greater than 21/dec/1991. for this i first tried to confirm the greater than condition, i wrote the following code:


but this gave an error: The value '' of the ValueToCompare property of 'CompareValidator1' cannot be converted to type 'Date'.

Posted: Apr 17, 2010 04:56 PM

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i have a series of start and end dates. I need to check that the range is valid. Im using a compare val to check the start date is before the end date. It doesnt seem to work.Keeps saying the range is invalid. i also first check required field and reg expression.....which works fine....heres some code:

ErrorMessage="Term 1 End Date is required."
ErrorMessage="Term 1 end date is invalid. Use dd/MM/YYYY"
ValidationExpression="(0[1-9]|[12][0-9]|3[01])[- /.](0[1-9]|1[012])[- /.](19|20)dd"
ErrorMessage="Invalid Date Range"></asp:CompareValidator>

Posted: May 21, 2008 09:54 AM

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Posted: Dec 30, 2008 08:57 AM

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When attempting to place controls in different content areas using Masterpages and trying to use a compare validator, I get the error: Unable to find control id 'txtStartDate' referenced by the 'ControlToCompare' property of 'cvlDate'. I have also attempted to set it within the c# code behind in page load: cvlDate.ControlToCompare = txtStartDate.ID and by using findControl there must be an easy way to achieve this?

<asp:Content ID="Content4" ContentPlaceHolderID="leftForm" Runat="Server">
<asp:Label ID="lblStartTimeEnter" runat="server" Text="Start Time:" Width="100px"/>
<asp:TextBox ID="txtStartTime"runat="server" MaxLength="50" Width="250"/>
<asp:Content ID="Content4" ContentPlaceHolderID="rightForm" Runat="Server">
<asp:label ID="lblEndDateEnter" CssClass="formMargin labelInput" runat="server" Text="End Date:" Width="100px"/>
<asp:TextBox ID="txtEndDate" CssClass="formMargin" runat="server" MaxLength="20" Width="250" ClientIDMode="Static"/>
<asp:CompareValidator ID="cvlDate" runat="server" ControlToValidate="txtEndDate" ControlToCompare="txtStartDate" Operator="GreaterThan" Type="Date" ErrorMessage="Start Date must be before End Date" >*</asp:CompareValidator>

Posted: Jan 10, 2011 02:34 PM

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Heres how i have set the values


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<asp:CompareValidator Display="Dynamic" ID="CompareValidator2" runat="server" ControlToCompare="endDate"
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Posted: Oct 16, 2009 01:40 PM

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Posted: Nov 01, 2010 12:01 AM

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I have used two textboxes for start date & End date.I have used date picker of Ajax. I am using compare validator with javascript code below. Now i want that start date should not be greater than end date. Date format is MM/dd/yyyy.

var EndDate =window.document.getElementById('ctl00_ContentPlaceHolder1_txtProjectedEndDate');
var StartDate = window.document.getElementById('ctl00_ContentPlaceHolder1_txtStartDate');
var PEndDate = EndDate.value;
var PStartDate = StartDate.value;
var ArrEndDate = PEndDate.split("/");
var EMonth = ArrEndDate[0];
var EDate = ArrEndDate[1];
var EYear = ArrEndDate[2];
var ArrPDate = PStartDate.split("/");
var SDate = ArrPDate[1];
var SMonth = ArrPDate[0];
var SYear = ArrPDate[2];
if(EYear > SYear)
args.IsValid = false;
else if((EYear == SYear) && (EMonth > SMonth))
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args.IsValid = false;
args.IsValid = true;

But the code is not working when months are different.

Posted: Feb 19, 2009 04:27 AM

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I have compare validators that I build on the fly in code behind that validate textboxes that are also built up in the code behind:


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Posted: Oct 07, 2010 12:15 PM

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I am using CompareValidator to compare the passwords and Retype password that in typed. If I types differ values in the text boxes and submit. It Compares the values and return to me at retype password textbox as I directed. But it is not showing any error message. following is the the source of the same.

ErrorMessage="Passwords are not matching"
ValidationGroup="test">Passwords are not matching</asp:CompareValidator>

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Posted: Aug 10, 2009 01:10 PM

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The code:
Private Function Verify() As Boolean
Dim intReg As Integer = 0
Dim intOT As Integer = 0
Dim BlnPass As Boolean = True
Dim BranchRegTotals As New Dictionary(Of String, Integer)
Dim BranchOTTotals As New Dictionary(Of String, Integer)
If chkDVTT.Checked = True Then
intReg += Val(txtDVTTRegHrs.Text)
intOT += Val(txtBrDVTTOTHrs.Text)
BranchRegTotals.Add("DVTT", Val(txtDVTTRegHrs.Text))
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intOT += Val(txtBrLMOTHrs.Text)
BranchRegTotals.Add("LM", Val(txtBRLMRegHrs.Text))
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Posted: Dec 22, 2009 05:21 PM

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Posted: Mar 17, 2010 10:56 AM

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even i use the culture gb-usa

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The error trace:Source Library: System.Web
TargetSite: Void ValidateValues()
StackTrace: at System.Web.UI.WebControls.RangeValidator.ValidateValues() at System.Web.UI.WebControls.RangeValidator.ControlPropertiesValid() at System.Web.UI.WebControls.BaseValidator.OnPreRender(EventArgs e) at System.Web.UI.Control.PreRenderRecursiveInternal()

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select ann;

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how can I make this work?

Posted: Feb 28, 2011 09:36 AM

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