Asp.net - Control 'GridView1' Of Type 'GridView' Must Be Placed Inside A Form Tag With Runat=server?
Apr 12, 2011
I have a problem with My dataGridVew. i am trying to export data from my DB to excel fie. it's a small page where there are only data grid view and button to export like this :
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
[CODE]...
When i click on the button error message is coming : "Control 'GridView1' of type 'GridView' must be placed inside a form tag with runat=server.???" even i have placed it in form ?
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Feb 15, 2012
For reasons I don't wish to get into, nor can I change, I am using .net web forms and was supplied with html that contained multiple forms. You may only have a single form tagged runat="server" with web forms so I've had to take an unorthodox approach.I am fine submitting a form by using HttpContext.Current.Request, however I am not how to go about populating form data.The only idea I have is to create an ajax call on document.ready() which calls a static webMethod "on_load" which would return JSON. This JSON is then parsed by a jquery function and populates the form with data.
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Mar 5, 2009
Am faced with the above problem which I have failed to understand. the details of the error are given below.
Code:Control 'ValidationSummary1' of type 'ValidationSummary' must be placed inside a form tag with runat=server. Description: An unhandled exception occurred during the execution of the current web request. review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.Web.HttpException: Control 'ValidationSummary1' of type 'ValidationSummary' must be placed inside a form tag with runat=server.
Source Error:
An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.
Stack Trace:
[HttpException (0x80004005): Control 'ValidationSummary1' of type 'ValidationSummary' must be placed inside a form tag with runat=server.] System.Web.UI.Page.VerifyRenderingInServerForm(Control control)
[Code].....
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Apr 5, 2012
I have a simple gridview that contains a label in one of the rows. I'm trying to access that label in the RowDataBound event, but for some reason I keep getting a "Object reference not set to an instance of an object." error on the line where I am using FindControl.
I've tried using "gvQReport.FindControl", "e.Row.FindControl", and "Me.FindControl" but nothing works.
[Code]....
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Sep 18, 2011
I want to add DomainUpDown control inside a DataGridView as a separate column. Each time a new row is added,I want that DomainUpDown control also be added. I also want to know when the user click the DomainUp or DomainDown button in DomainUpDown control for each row. Is it possible or not? I am using language vb.net/C#.
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Mar 11, 2011
I've got a fileupload control inside of a gridview so that each row (item from the database) can have an attachment associated with it. I've got a button next to the fileupload control (besides the default browse... button to select the file) to actually take the file and upload it to a file server.This works great if I use this button "Upload". However, underneath my gridview I have another imagebutton that is outside of the gridview, its just sitting on the form / page.The idea of this "Update" button is when end users make changes to the grid I can simply loop through the grid and update the values they have entered to the database. This also works great.
Now here is my issue assume a user has 3 rows in the grid view. On 2 of these rows he decides to add an attachment but he never clicks the "Upload" button he only uses the standard browse button to select the file. Now instead of clicking the "Upload" button that is on the grid view he ends up clicking the "Update" button outside of the grid thinking that it will save his attachments.
So I decided to write code to grab the fileupload control from the grid using .FindControls("NameOfFileUploadControl") in my Update button loop where I loop through all the rows. Then I check if myFileUploadControl.HasFile property to see if there exists a file and if there does upload the file then continue with the code.
The issue is when I click this "Update" button .HasFile always returns false even though I can see the text string of the path in the fileuploadcontrol textbox (the standard one next to the browse button). Is it because this goes back to the page load event and checks if it is a post back? What causes this and how can I fix it?
edit:Im adding some code because im still confused with this
Protected Sub SaveGrid()
For Each Row As GridViewRow In Me.gvLineItems.Rows
Dim f As FileUpload = CType(Row.FindControl("fuAttachment"), FileUpload)
[code]....
This method gets called on a click of a button... The fileupload control is in an of a gridview that is wrapped inside of an UpdatePanel:
<asp:FileUpload Width="90px" Font-Size="xx-small" ID="fuAttachment" runat="server" />
So why is this property always returning false?
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Oct 8, 2010
I have written a web usercontrol (ascx). Inside, there is a Panel that I want to show/hide on click of a hyperlink inside the usercontrol. Normally, this is easy just by doing something like this (the onclick attribute is added to the hyperlink on prerender):
[Code]...
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Apr 7, 2010
im tryin to link the 2 pages to each another, 1st, when i click on the View hyperlink in the product page, its supposed to lead me to the product view page, with the product chosen being displayed. Ive searched the net, and well, ive found some solution on this, but most of them were to update the statements, for my case it would be just to lead from the product page to the product view page. But everytime i press the view link, it leads to an error.
The source code is as below
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" DataKeyNames="productid"
DataSourceID="SqlDataSource1">
[Code].....
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Apr 1, 2010
I know i can run webforms and mvc views in seperate files, but i want to run the web server control output and events in/on the mvc view page, however, i keep getting this compiler error:
Line 38: <CuteWebUI:Uploader ID="UploadPic" runat="server" UploadType="IFrame"
Line 39: FileTooLargeMsg="{0} cannot be uploaded! File size ({1}) is too large. The maximum file size allowed is set to: {2}."
Line 40: TempDirectory="~/UserData/Images/TemporaryImages" UploadingMsg="Uploading..."
[code]....
i don't know what else do do, it just wont recognize the control name when im writing the event signature, right after the "handles" keyword, comes the server control name and then a dot, and then the event name, but as events its just giving me "Me", "MyBase" and "MyClass" options to run events for... doesn't let me access "FileUpload.OnFileUploaded" which is the control name & event name i want to write the sub routine method declaration (and subsequently method) and signature for.
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Dec 29, 2010
I'm new to custom server controls and I'm hoping to use them to build various 'modules' for different sites I build to cut down on duplicate code.
I'm familiar with custom user controls in which I can create an .ascx & .ascx.vb file which can then be imported into an .aspx page and used freely.
However, with custom server controls I cannot find a way of using markup/html code. Is this possible at all or must all code be created programmatically?
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Jun 19, 2012
I'm trying to create a new server control type in ASP.NET. This control would put a RequiredFieldValidator into a certain place. My class inherits from the WebControl class and it has a ControlID property which is the ID of a given control. The RequiredFieldValidator will be generated near the control with the given ControlID. However, the value of ControlID is nothing. In what events can I successfully use this property?
Public Class MyControl
Inherits WebControl
'...
Protected Property ControlID As String
Protected Property IsLinkedBrother As Boolean = False
[Code] .....
But ControlID is Nothing for some reason and the event throws an exception. ControlID is never changed after initialization and it is initialized this way:
<MyControl runat="server" ID="IDValue" ControlID="ControlIDValue" EnableCliendScript="true" CssClass="Whatever" Display="Dynamic" />
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Aug 7, 2011
I'm using the VS 2010-Net 4.I have develop an usercontrol that is compiled on one DLL and when I reference this DLL in other applications the usercontrol doesn't look like it was desined. It looks all wrong.
In the same project of the usercontrol if I put the control inside of a form there looks the way it supose to but in other projects as reference doesn't.
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Jan 29, 2010
I have a user control in vb.net application.and i have a form in vb 6.
so in my vb.net applciation to this user control i need to mention the vb 6 form as its parent.
Means when i run a vb6 application i should see this user control as a part of that form.
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Oct 7, 2011
I have a customer which as a Visual Basic Project in single instance mode with a wired presentation logic.
The main form contains a TabControl with mutliple TabPages.If I click on TabPageA another form is shown in front of the Form and resized to have the same size as the TabPage.
If I click on TabPageB the first form is hidden and another form is displayed.So basically for the user it looks like you have a TabControl with different TabPages which is not the case.
I tried converting the Forms to UserControls and put them inside the TabPage, but, thanks to the SingleInstance app, this would take a whole lot of refactoring. I tried it but eventually gave up because of many many runtime errors and I don't want to put any more effort in this.
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Oct 21, 2010
I have a DataGridView in one of my form which at a certain point I resize an change it's position. I would like to be able to restore it to the designer's default position at runtime. I know I could save it before changing and then restoring it later, but I feel like there surely is a way in .NET to just restore a control position to it's default.
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Jun 9, 2011
I am developing a software using microsoft visual studio basic 2010. I used a datagridview control to display a list of data from product table. What I want to do (actually I am not sure how to do it, or is there a way to do it), when I choose one of the value in one of the column inside the table, I want it to open a form that contain data(details) based on that value.
How to do it? How to call the value that I pressed, so it can be used to open a new form containing the details of that value
Example of the data: (the "system" column) SYSTEM
topaz
nex1300
Nec
If I pressed "topaz" system, it will prompt me to a new form containing the details of that "topaz" system.
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Apr 30, 2012
I am making an invoicing application. I have a label (lblCost) inside of a UserControl (InvoiceEntry) inside of a FlowLayoutPanel (pnlEntries). InvoiceEntry represents a line item on the invoice, and pnlEntries is the "body" of the invoice. pnlEntries can hold several InvoiceEntry controls.
I am attempting to sum all of the lblCost values from each InvoiceEntry control to make a subtotal, and I want that subtotal to change automatically if costs are changed (e.g., a change in quantities being ordered). Is there a way to handle when the lblCost.Text property of any of the InvoiceEntry controls contained within pnlEntries changes?
InvoiceAdd.vb:
' Instantiate objects of the various database interaction classes.
Private mCustomer As New Customers
Private mItem As New Items
[code]....
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Jul 2, 2011
I'm writing a program in which I want to list the values of some of the properties on every control on every form in the application. I can do this for simple controls like Buttons and Labels, but am having a problem when it comes to a complex control like a ListBox. I know how to extract the data when I laboriously code each ListBox individually. The problem is how to do it when it's a generic object buried inside two loops
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Jul 24, 2009
All my controls for getting data from user are in TableLayoutPanels and GroupBoxes inside TableLayoutPanel, I want to set default selected index of entire CoboBoxes to 0 in all TableLayoutPanelsand and GroupBoxes inside TableLayoutPanel. [code]...
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May 21, 2009
I have a gridview and I add some buttons programmatically to this grid. I have an edit and delete button right next to eachother and I simply want to put a space between them programmatically. Any idea how to do that? Here is the code to add the buttons.
[Code]...
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Aug 4, 2010
In datalist, I hve populated Grdiview.In Gridview , I hve checkboxes. Now i want to get the selected checkboxes names to be insrted into the database when clicking the button.so far i have tried like this
Protected Sub butn_Submit_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles butn_Submit.Click
Insert_CATEGORY_Info()
[code]....
the result is
"foundObject reference not set to an instance of an object. "
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Feb 5, 2011
Is it possible to control the form of client from server? I must create a program in server that will control or even show/load application form in client. I use Visual Studio .net Ultimate 2010 platform both of the server and client application.
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Apr 23, 2010
I've got a button inside a gridview to remove that item from the gridview (its datasource is a list). I've got the list being saved to session anytime a change is being made to it, and on page_load check if that session variable is empty, if not, then set that list to bind to the gridview.
Code Behind:
Public accomplishmentTypeDao As New AccomplishmentTypeDao()
Public accomplishmentDao As New AccomplishmentDao()
Public userDao As New UserDao()
[Code].....
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Dec 1, 2010
I have a gridview that appears in a modal popup that is generated dynamically and is bound to a dynamically generated SqlDataSource. I did this to hopefully take advantage of the gridview's automatic editing capabilities. My problem is that when the edit button is clicked the modalpopup closes due to a full postback in spite of the fact that my gridview is in an update panel. I looked at solutions here and here but neither fixed the problem. I've also tried every combination under the sun regarding the positioning of the ModalPopupExtender in relation to the update panel etc, and have tried changing UpdateMode to conditional as well.
Markup:
<span class="none"><asp:Button ID="btnDummy" runat="server" Text="Dummy" /></span>
<ajax:ModalPopupExtender ID="mpLabel" runat="server" TargetControlID="btnDummy" BackgroundCssClass="modalBackground" PopupControlID="pnlLabels"></ajax:ModalPopupExtender>
<asp:Panel ID="pnlLabels" DefaultButton="btnOk" Style="display:none;" runat="server">
<div style="background-color:#fff;border:1px solid black;padding:7px;">
[Code] .....
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Jul 22, 2009
I am using a gridview in my form.aspx page. The textboxes in each row of the gridview are to be populated from a datagrid upon clicking a particular field of the datagrid
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Jul 12, 2009
Here is the asp code for the design, I have a gridview that lists all Leave dates selected w/ 2 radio buttons . The user may choose if it is for whole day or halfday which are represented by a radio button. I want to get the value of each row if the user wants half day or whole day for me to calculate the leave days.
-I can already get the value but on the first 5 rows only since my gridview is paged with paging size of 5. how can i get the value for the other items if I have more than 5?
<asp:GridView ID="gvDates" runat="server" AllowPaging="True"
AutoGenerateColumns="false" OnPageIndexChanging="gvDates_PageIndexChanging"
onrowdatabound="gvDates_RowDataBound" OnRowDeleting="gvDates_RowDeleting"
PageSize="5">
[Code].....
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Jun 20, 2010
which are the control used to display word files and excel sheets inside vb.net forms ? (i have already added reference lib.)
Platform: Vb.net (framework : 3.5)
language : visual basic
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Apr 11, 2012
How can I access rep_DataSimilarToBacthid ? I need to bind the GridView and call GridView RowDataBound or InitializeRow
[Code]...
I am using VB.Net with Framework Version 2.0.
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Apr 24, 2009
I have a gridview and the one coulmn is a image column. How would i change the DataImageUrlFormatString value in my code behind?
i tried doing this but it does not work.......
((ImageField)(GridView2.Rows[0].Cells[0].FindControl("ID"))).DataImageUrlFormatString
= "~/createthumb.ashx?gu=/pics/gmustang06_2.jpg";
[code].....
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Nov 21, 2011
I have a GridView which is continually rebound using a timer and is within an updatePanel so the page doesn't refresh continually (each row has a countdown sequence so the gridview needs to continually get updated). Inside the gridview i have an imagebutton with an OnClick method. Previously to get the OnClick method to fire I would make sure the gridView wasn't in an UpdatePanel and that the pageload databinding of the gridview was in an "If Not IsPostBack". With the Timer though I can't have the gridview binding an an "If Not IsPostBack" and it needs to be in an UpdatePanel. Is there a way to use an UpdatePanel and "If Not IsPostBack" and still get the OnClick method to be called?
Here's some of the code, if my explanation didn't make complete sense:
UpdatePanel/Timer/GridView
<asp:UpdatePanel runat="server">
<ContentTemplate>
<asp:Timer ID="timerCountDown" runat="server" Interval="1000" OnTick="timerCountDown_Tick"></asp:Timer>
[Code] ....
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