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Compare Validation for dates of format dd-MMM-yyyy in ASP.NET using C#/VB.NET

<title>Compare Validation for dates of format dd-MMM-yyyy in ASP.NET using C#/VB.NET</title>

.color

{

color: Red;

}

</style>

</head>

<body>

<div>

<asp:ScriptManager ID="ScriptManager1" runat="server" />

StartDate/End Date:<asp:TextBox ID="txtStartDate" runat="server" TabIndex="5" Width="130px"></asp:TextBox>

 <ajc:CalendarExtender TargetControlID="txtStartDate" Format="dd-MMM-yyyy" runat="server"

Enabled="true" ID="ccal1">

</ajc:CalendarExtender>

<asp:TextBox ID="txtEndDate" runat="server" TabIndex="6" Width="130px"></asp:TextBox>

<ajc:CalendarExtender ID="ccal2" runat="server" Enabled="True" Format="dd-MMM-yyyy"

TargetControlID="txtEndDate">

</ajc:CalendarExtender>

<ajc:TextBoxWatermarkExtender runat="server" ID="TextBoxWatermarkExtender2" TargetControlID="txtStartDate"

WatermarkText="dd-MMM-yyyy" WatermarkCssClass="watermarked">

</ajc:TextBoxWatermarkExtender>

<ajc:TextBoxWatermarkExtender runat="server" ID="TextBoxWatermarkExtender4" TargetControlID="txtEndDate"

WatermarkText="dd-MMM-yyyy" WatermarkCssClass="watermarked">

</ajc:TextBoxWatermarkExtender>

<asp:RegularExpressionValidator ID="RegularExpressionValidator1" runat="server" ControlToValidate="txtStartDate"

CssClass="color " ErrorMessage="Enter a valid End date e.g (dd-MMM-yyyy)." ValidationExpression="^(0?[1-9]|[12][0-9]|3[01])-(Jan|Feb|Mar|Apr|May|Jun|Jul|Aug|Sep|Oct|Nov|Dec)-(19|20)\d\d$"

SetFocusOnError="true" Display="Dynamic"></asp:RegularExpressionValidator>

<asp:RegularExpressionValidator ID="RegularExpressionValidator2" runat="server" ControlToValidate="txtEndDate"

ErrorMessage="Enter a valid End date e.g (dd-MMM-yyyy)." ValidationExpression="^(0?[1-9]|[12][0-9]|3[01])-(Jan|Feb|Mar|Apr|May|Jun|Jul|Aug|Sep|Oct|Nov|Dec)-(19|20)\d\d$"

SetFocusOnError="true" Display="Dynamic" CssClass="color "></asp:RegularExpressionValidator>

<asp:CustomValidator runat="server" ID="datesValidator" OnServerValidate="DatesValidator_Validate"

ErrorMessage="End Date is greater than Start Date." CssClass="color "></asp:CustomValidator>

<asp:Button ID="btnValidate" runat="server" Text="Validate" />

</div>

</form>

</body>

</html>

In C#:

using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Web.UI;

using System.Web.UI.WebControls;

public partial class Validation4dd_MMM_yyyy : System.Web.UI.Page

{

protected void DatesValidator_Validate(object source, ServerValidateEventArgs args)

{

if ((txtStartDate.Text != "") && (txtEndDate.Text != ""))

{

DateTime startDate = Convert.ToDateTime(txtStartDate.Text);

DateTime endDate = Convert.ToDateTime(txtEndDate.Text);

if (endDate < startDate)

{

args.IsValid = false;

}

In VB.NET:

Imports System.Collections.Generic

Imports System.Linq

Imports System.Web

Imports System.Web.UI

Imports System.Web.UI.WebControls

Partial Public Class Validation4dd_MMM_yyyy

Inherits System.Web.UI.Page

Protected Sub DatesValidator_Validate(ByVal source As Object, ByVal args As ServerValidateEventArgs)

If (txtStartDate.Text <> "") AndAlso (txtEndDate.Text <> "") Then

Dim startDate As DateTime = Convert.ToDateTime(txtStartDate.Text)

Dim endDate As DateTime = Convert.ToDateTime(txtEndDate.Text)

If endDate < startDate Then

args.IsValid = False

End If

End Sub

End Class

Output:

Aspdotnet-Kishore

Thursday, 13 December 2012

Compare Validation for dates of format dd-MMM-yyyy in ASP.NET using C#/VB.NET

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