Data Controls :: Validate Whether GridView Has Rows Or Is Empty Using Custom Validator?

Nov 27, 2013

How to validate if gridview is empty rows or not, i want to use ValidatorCalloutExtender.

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Similar Messages:

Regular Expression Validator Does Not Validate Empty Textbox?

Jun 30, 2010

I would like to validate the textbox for specific text and it must not be blank. But the regular expression validator is not validating if the text box is BLANK. However, it validates if I type something in the text box.

How can I make regular expression to trigger even if the text box is empty?

Should I use Required Validator + Regex Validator at the same time?

<asp:TextBox ID="txtcard" runat="server" MaxLength="16"></asp:TextBox>
<asp:RegularExpressionValidator ID="RegularExpressionValidator2" runat="server"
ControlToValidate="txtcard" ErrorMessage="Please type credit card no"

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Forms Data Controls :: GridView Empty Rows?

Oct 6, 2010

I bind data to GridView from SqlDataSource. GridView have <19 rows. But i want that all 19 rows are written. If Rows in SqlDataSource are empty it's must be empty in GridView but must be there!

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Forms Data Controls :: Empty Cells On GridView With 10 Rows To Edit?

Mar 25, 2011

I am using a GridView on my ASP.NET form.

Would it be possible to have a GridView with 10 empty rows, having 5 columns.

Can I define the number of GridView Rows I could Edit.

i would then have an Update Button, which would update all the rows to the database.

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Forms Data Controls :: Show Footer Rows In An Empty Gridview?

Feb 3, 2010

I am trying to show the footer template of a gridview on page load when there is no data in the database. The reason why im saying page load is that I have code to actually pull data from the database instead of a datasource.

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Web Forms :: Custom Validator - Control To Validate?

Sep 15, 2010

I am running the code below in a .net 2.0 content page.There are no containers such as wizard etc. When I click on the submission button for debugging purposes I get 'Nothing'. why I can't access the 'controlToValidate'?

Protected Sub validateCharacter(ByVal source As Object, ByVal args As System.Web.UI.WebControls.ServerValidateEventArgs)
If Page.IsPostBack Then
Dim validationControl As CustomValidator = DirectCast(source, CustomValidator)[code]....

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Web Forms :: Validate At Least One Of Two TextBoxes Must Have Value Using Custom Validator

May 7, 2015

I have two text boxes one is mobile no and another one is landline number . how to make any one of them as required..

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Forms Data Controls :: Fetch Gridview Edit Template Field In Custom Validator?

Jan 29, 2010

I have an edit template on gridview which opens a text box and button with a custom validator .

On button press I have to validate the text in edit item template with a text field in gridview row template.

I am having a hard time fetching the data of the edit template textbox. Even though both custom validator and textbox are in same edit item template but intellisense is not picking it up.

Also the custom validator server_validate event is using "object source" instead of "object sender"

How do I fetch the edit item template text for comparison

I am doing this as

protected void CustomValidator1_ServerValidate(object source, ServerValidateEventArgs args)
GridViewRow gvrow = (GridViewRow)(source as Control).Parent.Parent;
int index = gvrow.RowIndex+1;
// TextBox txttmp=(TextBox)
Label lbl = (Label)gvComp.Rows[index].FindControl("lblSecShare");
decimal CSh = Convert.ToDecimal(lbl.Text);

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AJAX :: Necessary To Give Control To Validate Control In Custom Validator

Sep 18, 2013

Is it necessary to give Control to Validate control in Custom Validator?

If yes then why this will happen?

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Forms Data Controls :: Adding Empty Rows?

Jan 3, 2011

Adding empty rows?

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Forms Data Controls :: Getting Text As Empty String When Gridview Cell Is Empty?

Feb 19, 2010

I have a gridview with two bound fields. On clicking a button i want to display the values in first row of gridview in two textboxes. But if gridview cell is empty i am getting the text in textbox to which the value of cell is given as -' 'i know my problem will be solved if i use the template fields instead. But i want a solution while maintaining the bound fields ,if any.

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How To Create The Custom Validator Instance That Is Linked To The Custom Validator

Dec 17, 2010

I created my custom validator in one project, something like that:


he composite control in another project. I added a reference of the custom validator project to the composite control project. I have a textbox in a composite control and I would like to validate this textbox by the composite control I created. But how can I do that? How can I create the custom validator instance that is linked to the custom validator I created?

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Forms Data Controls :: Hide Rows With Empty Data?

Jul 26, 2010

I need to hide rows in a GridView where all of the cells in the row contain no data. Here's the trick, in RowDataBound, I am performing the following:


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Javascript - Hidden Validator Controls Still Validate?

Dec 28, 2010

I've set up a page that uses JavaScript to hide or show rows in an HTML table, depending on the state of a checkbox.

So far, so good. But this is a data entry form and some rows include validation controls. However, it appears that if I hide a row (using JavaScript: style.display = 'none') that contains a validation control, the control still validates on an attempt to postback.

way I can do this but have the validation controls not do anything if that row is hidden?

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Custom Server Controls :: Custom Validator Client-side Validation Cannot Work?

Jan 13, 2010

I've been trying to get a custom validator component working that ensures at least one checkbox from a checkboxlist has been checked. I've been used some code I found on but the client-side validation didn't work. I've been attempting to modify it to get the client-side javascript validation to work with no luck. Basically, I compile the below code into a DLL and add it to my bin folder.


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Forms Data Controls :: Custom Validator Client Function Executed Twice?

Dec 1, 2010

I have some problem with the custom validtor, I do validate at both client side & server side, and i have noticed that the client side code has been executed when I clicked Submit..

More details:

The page contains some Text boxes & one submit button, and all is client-server validated, the problem that when the end user selects the file path through browse control, the code will auto-fill in the file name textbox, and it gives the option to edit; The code which is doing this in the custom validtor client handler, here is the problem it is on_submit click handler, the script function has been called again....!

I have no idea if this is the correct behavior, But I don't want the script code to be executed when any server events fired... !

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Controls :: Validate DropDown CheckBoxes Control Using RequiredField Validator

May 7, 2015

<cc2:DropDownCheckBoxes ID="cblCustomerList" runat="server" Width="180px">
<Style SelectBoxWidth="195" DropDownBoxBoxWidth="160" DropDownBoxBoxHeight="195"/>
<asp:ListItem Text = "Kidneys Donor" Value = "Kidneys Donor"></asp:ListItem>
<asp:ListItem Text = "Lungs Donor" Value = "Lungs Donor" >Eye Donor</asp:ListItem>
<asp:ListItem Text = "Pancreas Donor" Value = "Pancreas Donor" >Blood Donor</asp:ListItem>
<asp:ListItem Text = "One" Value = "1">Heart Donor</asp:ListItem>
<asp:ListItem Text = "One" Value = "1" >Liver Donor</asp:ListItem>


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Custom Server Controls :: Extended GridView.Rows Collection Always = PageSize Even On Last Page?

Mar 22, 2010

Using VS2005, VB code behind,

I am extending the GridView control to include a custom pager for a custom paging scheme (only one page returned from the database at a time rather than all records). In my testing a discovered an issue - on my last page of data, the GridView's rows property always returns a collection of PageSize page, rather than the actual number of records on the page, with non-data fill records being empty rows.

For example, suppose I have 23 records in my database. Assuming a PageSize of 10, when I page to the last page of data the gridview it properly displays the last 3 recrods - but when I handle the GridView's CommandName="Select" event the GridView's Rows collection contains 10 records, the last seven of which are empty.

I set a break point in just before I call GridView.DataBind and verified that the DataTable used as the DataSource for the last page of data does in fact only contain the 3 expected records. But when I set a breakpoint on the Sub that handles the "Select" GridView command, the GridView.rows collection contains 10 records, the last 7 of which are empty.

This post[URL] and comments make note of the issue but the solution prescribed by the author does not seem to work.

Attached are some snippets of my extended GridView and the two methods from my page where I mentioned setting breakpoints above.

Snippets from my extended GrdiView




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C# - Order Of Postback Event Handler And Validate Method Of All Validator Controls?

Aug 11, 2010

I'm learning page life cycle. I find an article on MSDN [URL] It says that If the request is a postback, control event handlers are called. After that, the Validate method of all validator controls is called, which sets the IsValid property of individual validator controls and of the page. And the picture in the article also says validate fires after event handling. If this is true how can I get status of validator when I handling the event?

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Custom Server Controls :: Empty Value For Custom TextBox?

May 19, 2010

i created a custome control wit the following code.


from aspx page, when i click the link button to get the data in my composite control.

i get an empty Fields.

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Custom Server Controls :: Access Multiple Header Rows Of The Gridview In Render Method?

Oct 22, 2010

I have extended a gridview to add an additional header with following two hyperlink controls "Select All" and "Clear All". These will operate on checkboxes in the data rows of the grid. I hide the column headers as I only want to show one column with checkboxes and "Select/Clear All" links. Everything is working as expected. Now, I wanted to add a scrollbar to my grid control, I did add the scroll bar using div but what it does is, it includes the "Select All and Clear All" links aswell. I only need to add the scrollbar to datarows and not to the header.I am trying to extend my control to include hte scrollbar by adding div during Render function. But how will I determine or loop through header rows? How will i get the header row with hyperlinks that I created above?? In Render if I do this.HeaderRow, it gets the original column header and not the custom header.

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Data Controls :: Select Number Of Rows From DropDownList And Add Rows To GridView?

May 7, 2015

I came across a situation where a user selects no of rows from dropdown , depending upon the user input, automatically that no of editable rows should appear to input data...(maximum 8 rows only)

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Web Forms :: Custom Validator Only Works If All Checkboxes Within Gridview Are Selected?

Jan 31, 2011

I need to check if ANY of the checkboxes are selected from the gridview.. if atleast 1 is selected, then continue, if none are checked then return the error message so they can make a selection, below is what i have.. if i have all checkboxes checked, then everything works, but if i only have 1 then it doesnt work..


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Does A Custom Validator Have To Be Used With The Validator Callout Extender

Jul 6, 2010

I have a validator callout extender that works, it shows the callout box. But, it does a postback. It didn't do a post back the first time I clicked the button but it did for subsequent times. I read on the AJAX site that a custom validator must be used with this for it to work. I'm currently using this with a required field and regular expression validator. It works, the callout appears, but it doesn't work every time with out the post back.I posted this to see if there is a way to get this to work with a required field and regular expression validator, with out using a custom validator. I'm using the newest release of the toolkit, so I thought the documentation may be old, since the callout is appearing.

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Forms Data Controls :: Why Getting A Empty String For "GridView1.Rows[rowIndex].Cells[2].Text"

Jan 14, 2011

I am using c# with VS 2010 and dynamic data. I have a gridview that is populated by scaffolding. I then want to use the "Delete" command on the row. While the command works fine, it does not seem to know the datarecord has child tables in a one to many relationship, thus it wont properly delete the child tables before deleting the parent table. Which is fine, i can call some linq to sql to get the table id and delete all of its children before the parent table is deleted. Odd thing is, the Gridview is retruning "" emtpry strings for the cell that has the table uniqe ID.


and here is the gridview:


why i am getting a empty string for "GridView1.Rows[rowIndex].Cells[2].Text"?

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