i have a calendar control whose value will be displayed in a textbox, i need to validate the textbox value to the current date... It should not be less than current date.....
Thanks for ur valuable reply for my last post
You can use the CompareValidator control, like this:
<asp:CompareValidator ID="dateValidator"
ControlToValidate="IdOfTextBox"
Text="error message"
Operator="GreaterThanEqual"
Type="Date"
runat="server" />
And in the code-behind, set the ValueToCompare property of the validator to DateTime.Today (for example in the Page_Init method).
Try This in Code Behind :
<asp:CompareValidator ID="CompareValidator2" runat="server" ErrorMessage="Date Should be Greater Than Current Date"
ControlToValidate="txt_DateFrom" ValuetoCompare='<%# DateTime.Now.ToString("d") %>' SetFocusOnError="true" Display="Dynamic" />
Use CompareValidator control, set properties as below:
operator = GreaterThanEqual
Type = Date
ValueToCompare = CurrentDate
Related
I'm having a situation where i'm having a Calendar control in my page and when user selects a date it should check whether date selected is greater than today's date.
I tried a lot and Googled it as well, but in every place they are taking value using a textbox and i want the same to be done with a Calendar control.
Contrary to popular belief, you actually don't need any C# code to get this done! All you need is some extenders and validators on your date textbox. So let's say I had two textboxes -- one named txtStartDt and one named txtEndDate; this is how the extensions for them would be placed:
// Start Date
<asp:TextBox ID="txtStartDt" runat="server" CssClass="textboxint" /> // the main control itself
<ajax:CalendarExtender ID="calStartDt" runat="server" PopupPosition="BottomRight"
TargetControlID="txtStartDt" /> // allows the control to behave like a calendar picker
<asp:CompareValidator ID="CVStartDt" runat="server" Type="Date" Operator="LessThan"
ErrorMessage="Start Date must come before the End Date" ValidationGroup="ReportDate"
ControlToValidate="txtStartDt" ControlToCompare="txtEndDt" Display="None" /> // THIS is the main solution to your problem
<ajax:ValidatorCalloutExtender ID="VCEStartDt" runat="server" TargetControlID="CVStartDt"
HighlightCssClass="valCalloutint" /> // Checks that the CV is working correctly
<asp:RequiredFieldValidator ID="RFVStartDt" runat="server" ControlToValidate="txtStartDt"
Display="None" ErrorMessage="Start Date is required" ValidationGroup="ReportDate" /> // ensures a value was added to the textbox
<ajax:ValidatorCalloutExtender ID="VCEreqStartDt" runat="server" TargetControlID="RFVStartDt"
HighlightCssClass="valCalloutint" PopupPosition="BottomRight" /> // Checks that the RFV is working correctly
// End Date
<asp:TextBox ID="txtEndDt" runat="server" CssClass="textboxint" />
<ajax:CalendarExtender ID="calEndDt" runat="server" PopupPosition="BottomRight" TargetControlID="txtEndDt" />
<asp:CompareValidator ID="CVEndDt" runat="server" Type="Date" Operator="GreaterThan"
ErrorMessage="End Date must come after the Start Date" ValidationGroup="ReportDate"
ControlToValidate="txtEndDt" ControlToCompare="txtStartDt" Display="None" />
<ajax:ValidatorCalloutExtender ID="VCEEndDt" runat="server" TargetControlID="CVEndDt"
HighlightCssClass="valCalloutint" />
<asp:RequiredFieldValidator ID="RFVEndDt" runat="server" ControlToValidate="txtEndDt"
Display="None" ErrorMessage="End Date is required" ValidationGroup="ReportDate" />
<ajax:ValidatorCalloutExtender ID="VCEreqEndDt" runat="server" TargetControlID="RFVEndDt"
HighlightCssClass="valCalloutint" PopupPosition="BottomRight" />
Note that the extra ValidatorCalloutExtender tools are not redundant, but actually allows the program to prevent the user from entering an empty value for one of the textboxes.
Hope this helps!!
The calendar control should have a property called SelectedDate. You can compare this property with any other DateTime property. The code snippet below will check if the SelectedDate is greater than today.
if (Calendar.SelectedDate > DateTime.Now())
{
}
I'm using 3 validators to validate the TextBox, but all get triggered when invalid value is entered in the Textbox. But I want to these validators to work in a particular order so that users can resolve these faults one by one.
<asp:TextBox ID="txt_temp" runat="server"></asp:TextBox>
<asp:CompareValidator ID="cv_txt_temp" runat="server" CssClass="error" ControlToValidate="txt_temp" ValueToCompare="0" Type="Double" Operator="GreaterThanEqual" ValidationGroup="insert" SetFocusOnError="true" ErrorMessage="Must be valid value" Display="Dynamic"></asp:CompareValidator>
<asp:RegularExpressionValidator ID="rev_txt_temp" CssClass="error" SetFocusOnError="true"
runat="server" ErrorMessage="Value upto 1 decimal place" Display="Dynamic" ControlToValidate="txt_temp" ValidationExpression="\d+(?:(?:\.|,)\d{0,1})?" ValidationGroup="insert"></asp:RegularExpressionValidator>
<asp:RangeValidator ID="rv_txt_temp" Display="Dynamic" runat="server" SetFocusOnError="true" ValidationGroup="insert" ControlToValidate="txt_temp" Type="Double" CssClass="error"></asp:RangeValidator>
The validators that you add automatically add themselves to Page.Validators collection in the order they are created. The validation runs thorugh in the order they are present in the Page.Validators collection which means the first validator definition shown in the aspx file is first in Page.Validators. If you want to change the order, then the only way is to get all of your validators into the page in the order you want them to fire.
Edit : In your case the only way is to use css to overlap the validators.
You can use Custom Validator, Custom Java Script or Mask edit validator
You can try with only RegularExpressionValidator
<asp:RegularExpressionValidator ID="rev_txt_temp" CssClass="error" SetFocusOnError="true"
runat="server" ErrorMessage="Error.." Display="Dynamic" ControlToValidate="txt_temp"
ValidationExpression="^[1-9]\d*(\.\d{0,1})?$" ValidationGroup="insert">
</asp:RegularExpressionValidator>
let me know, if you want in other way..
My solution of "setting validation order" is:
On Page where have validators:
1) I set AutoEventWireup to false in aspx code and use custom validators
2) I create and call functions for validations and sett "IsValid" for related validators:
validCustom1.IsValid = Validation1(textbox1.Text);
if (Page.IsValid)
validCustom2.IsValid = Validation2(textbox2.Text);
if (Page.IsValid)
validCustom3.IsValid = Validation3(textbox3.Text);
if (Page.IsValid)
{
//Do somethink
}
else
{
//Do somethink else
}
You can create your custom Validation. It will takes time, but you can control order of validation.
You can also use masked textbox extender.
I have a compare validator which validates on two <telerik:RadDatePicker> Start date and End date. The validation rule is simple, Check if Start Date is greater than the End Date and show the error message to the user to correct it
it works as expected but when the start and end dates are the same it is showing the message which is not expected. Code Below:
<asp:CompareValidator ID="dateCompareValidator" runat="server" ControlToValidate="endDate" ControlToCompare="startDate" Operator="GreaterThan" Type="Date" ErrorMessage="Start Date is greater than the End Date - please correct dates."Display="Dynamic"></asp:CompareValidator>
and the date pickers are as follows for both start date and end date:
<telerik:RadDatePicker CssClass="rcCalPopup" ID="endDate" runat="server"
Skin="Vista">
<DateInput ID="DateInput2" runat="server" LabelCssClass="radLabelCss_Vista" Skin="Vista">
</DateInput>
<Calendar ShowRowHeaders="false" ID="Calendar2" runat="server" UseRowHeadersAsSelectors="False" UseColumnHeadersAsSelectors="False"
ViewSelectorText="x" Skin="Vista">
</Calendar>
<DatePopupButton CssClass="rcCalPopup"></DatePopupButton>
</telerik:RadDatePicker>
The rule you have defined with the Validator is:
Enddate must be greater than Startdate (note the missing equal)
The validator Operator property determines the rule for valid input, not invalid input.
So if you want to allow equal dates you have to use GreaterThanEqual
<asp:CompareValidator ID="dateCompareValidator" runat="server"
ControlToValidate="endDate" ControlToCompare="startDate"
Operator="GreaterThanEqual" Type="Date"
ErrorMessage="End date must be equal or greater than start date - please correct dates."Display="Dynamic">
</asp:CompareValidator>
Note that i've also changed the ErrorMessage accordingly. If the input control is empty, no validation functions are called and validation succeeds. Use a RequiredFieldValidator control to require the user to enter data in the input control.
In web application, i am using regular expression for date like "dd-mm-yyyy" format for this i get the validation but it is not working when we enter date like "12-02-2012" remaining condition it is working fine, can you help me this is my validation expression.
<asp:RegularExpressionValidator ID ="myg" runat ="server" ControlToValidate ="txt" ErrorMessage ="Check"
ValidationExpression ="^(((0[1-9]|[12]\d|3[01])-(0[13578]|1[02])-((19|[2-9]\d)\d{2}))|((0[1-9]|[12]\d|30)-(0[13456789]|1[012])-((19|[2-9]\d)\d{2}))|((0[1-9]|1\d|2[0-8])\/02\/((19|[2-9]\d)\d{2}))|(29\/02\/((1[6-9]|[2-9]\d)(0[48]|[2468][048]|[13579][26])|((16|[2468][048]|[3579][26])00))))$" >
</asp:RegularExpressionValidator>
I solve the problem,
ValidationExpression ="^(((0[1-9]|[12]\d|3[01])-(0[13578]|1[02])-((19|[2-9]\d)\d{2}))|((0[1-9]|[12]\d|30)-(0[123456789]|1[012])-((19|[2-9]\d)\d{2}))|((0[1-9]|1\d|2[0-8])\/02\/((19|[2-9]\d)\d{2}))|(29\/02\/((1[6-9]|[2-9]\d)(0[48]|[2468][048]|[13579][26])|((16|[2468][048]|[3579][26])00))))$"
asp:RegularExpression is not the way to do this.
For validating date using an ASP.NET Validator its ideal to use asp:CompareValidator
Here is a small mock-up
<asp:TextBox ID="txtDatecompleted" runat="server"/>
<asp:CompareValidator ID="dateValidator" runat="server"
ControlToValidate="txtDatecompleted"
ErrorMessage="Please enter a valid date."
Operator="DataTypeCheck"
Type="Date"
ValidationGroup="TestVGroup">
</asp:CompareValidator>
<br />
<asp:Button ID="ClickButton" Text="Click Me" runat="server"
ValidationGroup="TestVGroup"
OnClick="ClickButton_Click" />
This will automatically check for different date formats and leap years
I slove the problem,
ValidationExpression ="^(((0[1-9]|[12]\d|3[01])-(0[13578]|1[02])-((19|[2-9]\d)\d{2}))|
((0[1-9]|[12]\d|30)-(0[123456789]|1[012])-((19|[2-9]\d)\d{2}))|((0[1-9]|1\d|2[0-8])
\/02\/((19|[2-9]\d)\d{2}))|(29\/02\/((1[6-9]|[2-9]\d)(0[48]|[2468][048]|[13579][26])|
((16|[2468][048]|[3579][26])00))))$"
I have textbox in my asp.net 3.5 VB.net webform
in my textbox1 the text is : 30-Dec-2010, 06:00:00 PM
i want when the date in textbox is greater than textbox1 then the Label text would be "No REfund ! Sorry"
How to do this
You should use ASP.Net CompareValidator for this purpose. You can check both on client- and serverside. Besides i would recommend not to have Date AND Time in one Textbox. That makes it more difficult to validate and it's not standard, so it might be confusing and error-phrone for users.
<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
<asp:TextBox ID="TextBox2" runat="server"></asp:TextBox>
<asp:CompareValidator ID="CompareValidator1" runat="server" ControlToCompare="TextBox1" ControlToValidate="TextBox2" Type="Date" Operator="GreaterThan" runat="server" ErrorMessage="No REfund ! Sorry" EnableClientScript="true" ></asp:CompareValidator>
<asp:Button ID="BtnPostback" runat="server" Text="postback" />
On the serverside you should also trigger the validation(f.e. if javascript is disabled):
Private Sub BtnPostback_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles BtnPostback.Click
Page.Validate()
If Me.IsValid Then
'Do something f.e. save'
End If
End Sub
CompareValidator Class
It would be better if you do it using javascript because this functionality does not require postback. A similar question has been posted on stackoverflow which compares two dates using javascript. Check it out here. You just need to extend it to incorporate assigning text to the label.