I have a Gridview and when the edit button is clicked the details of that row is displayed using a detailsview. While displaying, I need to find a control in detailsView, and then bind it with a Datasource. First of All I'm not sure about the event to be used but have used DetailsView1_DataBound. However, if I have to find the control using:
var control=(ControlType)DetailsView1.Findcontrol("ID");
Always returns null. May be I am not using the right event, and it couldn't find the control at that point.
I've been working for a long time with GridViews and DetailsViews, but yesterday I've come across a new scenario, which I quite do not understand.
I have a GridView with ImageButton (CommandName="Insert") which will change the mode of the DetailsView to Insert. Afterwards I'll look for a DropDownList inside that DetailsView and add some items dynamically. Works fine, but one first the first time I press that ImageButton. If I click on "Cancel" in the DetailsView and press the ImageButton again, the .FindControl() Method returns null.
I've created this sample: (To make it run in your Visual Studio, just bind a DataSource to the DetailsView, otherwise it will not be rendered)
I have also tried using a ItemTemplate, and not a InsertItemTemplate, but this results in the same. After using the ChangeMode-Method the DetailsView.CurrentMode == InsertMode. The only thing I can think of is, that the markup is already generated for the ItemTemplate and changing the Mode to InsertMode can't affect the rendered markup, or something like this.
I got a problem about finding controls in Edit/Insert Itemtemplate inside a DetailsView.Here is the code.I put a Label (id= "Label6") to test whether the findcontrol method works or not. Unfortunately, I almost tried every means but still coudn't find it.
I want to access child menuitem by name.not index number is it possible? This doesn't working Menu menuLogin = (Menu)(LoginView1.FindControl("mLogin")); MenuItem mi = menuLogin.FindItem("Register"); mi.text="Null Reference Exception here";
But this works: Menu menuLogin = (Menu)(LoginView1.FindControl("mLogin")); MenuItemCollection mic = menuLogin.Items[0].ChildItems; MenuItem mi = mic[0]; mi.text="its OK";
I am looking something like this: MenuItemCollection mic = menuLogin.Items[0].ChildItems; MenuItem mi = mic["Register"];//or mic.finditem("Register") or so... mi.text="its OK";
Can Someone explain why this doesn't work here, when it works in another formview? [Code].... I Get Object Reference Not Set, but its all there. I see no reason why it shouldn't work. Same error happens if i remove the first if statement and leave the second it Gives an error on LocationAddButton.Visible = false;
I have a gridview with several ItemTemplates. The first contains a checkbox the rest contain textboxes. I then added dynamically some bound controls like this:
BoundField bdfPrivName = new BoundField(); clsUtilities.SetBoundFieldCenter(ref bdfPrivName, "PrivName", "Priv Name"); BoundField bdfDescription = new BoundField(); clsUtilities.SetBoundFieldLeft(ref bdfDescription, "PrivDesc", "Description"); BoundField bdfLive = new BoundField(); clsUtilities.SetBoundFieldCenter(ref bdfLive, "Live","Active?"); grdExisting.Columns.Add(bdfPrivName); grdExisting.Columns.Add(bdfDescription); grdExisting.Columns.Add(bdfLive);
I then use FindControl() to locate the checkbox and textboxes and perform my logic based the result foreach (GridViewRow gvr in grdMissing.Rows) { mckbAny = (CheckBox)gvr.FindControl("ckbAdd"); mtxtApplyDate = (TextBox)gvr.FindControl("txtAddApplyDate"); mtxtDateToAdd = (TextBox)gvr.FindControl("txtAddDateToAdd"); mtxtDateToRemove = (TextBox)gvr.FindControl("txtAddDateToRemove"); } etc.
This all worked fine. I then got a request to put the bound fields as the second, third and fourth columns, after the check box and before the textboxes. I found that this was easy to do by changing the Add's to Inserts as follows: grdExisting.Columns.Insert(1, bdfPrivName); grdExisting.Columns.Insert(2, bdfDescription); grdExisting.Columns.Insert(3, bdfLive); It looked fine of the page, but the FindControl(), all of them fail to work.
In my Application, I am using User control which contains one GridView and few Buttons. GridView Contains CheckBox in Item Template of first Column for Selection purpose. Now on one of the Button's click Event I am traversing through the GridView and find which row is selected.
Following is my Code for traversing which is not working:
I have been struggling with asp.net DetailsViews for a while, and try to figure out why asp.net LinkButton Click Event doesn't fire inside of detailsview:
See my code below:
<asp:DetailsView ID="detailsview1" runat="server"
[Code].....
I would like the linkbutton clickEvent to work in detailsview.
I have a Hyperlink control in an ItemTemplate inside of a DetailsView. The DetailsView is inside a view of a MultiView which is inside of an update panel.
I am using binding syntax to bind the NavigateUrl property of the Hyperlink. However, the text shows up but when the mouse point moves over the hyperlink, the pointer doesn't change to a pointer hand like it should. And, nothing happens when the HyperLink is clicked. Here's the syntax I'm using:
Background: I open a page that has a detailsview control using Accessdatasource. It is automatically opened with the row I want to update as I get there by passing the key as a URL parm. The update works for all fields except 2 template fields I added. I added a field for update date and updated by which I want the code to populate in the code behind so the user does not enter it. I have the same login on another page using an insert and it works fine. I cannot figure out what is wrong on the update and I tried everything. The code behind is in the OnItemUPdating event. code behind:
Getting the message that ObjectDataSource ... count not find a non-generic method ... that has parameters ... The parameter list is fine until I get to the very end and it list the two data fields that are in my DetailsView. Using the ASP Tutorial #17 (Examining the Events Associated with Inserting, Updating, and Deleting) and the Exploring the Data Modification - specifically the one showing the INSERT of the Product Name and UnitPrice. ASPX page is pretty simple and attempting something similar, two fields to insert a new record - update the other fields later.
Full Error Message follows along with ASPX and the AsignaturasBLL.cs. Interesting thing is that when I swap the two fields in the DetailView, then the last two fields in the error message are swapped. In the error message I bolded these two fields.
I am trying to arrange the information from a SQL record into a 3 column by 3 row table to fit the form presentation that I want. I have placed on the page 3X3 table and then tried to place a detailsview in the first cell for the first picture called P1dv.
I have place a detailsview in the last cell that would control the paging of information called Controldv. I need to fiqure out how to link P1dv paging to Controldv page action. I am using visual web dev. 2005. I am not updating or editing these are read only views.
example of what i need the form output to look like:
But I´m trying to do that programmatically, not with the sqldatasource. So I wrote the method that binds data to Detailsview and I call it in the page_load. The problem is that I have to click two times on the select button to view the detailsview. The first time I click on the select button nothing happens.
I have a gridview with a Select button. Clicking the Select button for a particular item, I need its full details displayed in DetailsView. how I can bind to DetailsView? Here is what I have so far.
The thing I don't like about FindControl() is the string parameter. If the ID has been changed the compiler won't pickup the error. The error will only occur at runtime. It would be nice if we could get the reference using a method that the compiler would check at compile time?
I have the below linqdatasource selecting event to populate my frontend asp.net listview. How do I find a control within my listview's ItemTemplate within this event? My attempted code returns the error: "Object reference not set to an instance of an object" on code line 80? From the debugger I know that "query.UserId;" returns a value so it's my "ratingControl" reference that the debugger can't find?...
How can i use findControl and how can i get id's according to FindControl method? i need to get all TextBox data there are 40 textbox. And TextBoxid data... i reall want to learn also linq method ;)
I know the back button always presents a problem, but this one doesn't make any sense.
I have a simple details view and a button on a page. The button sends the user to the homepage. I am trying to prevent the user from being able to use the detailsview if they click Back in their browser.
This is the button click event
[code]....
When the button is clicked...oddly the user is sent to the homepage then when they click the browser back button they are sent to previous page with the detailsview still visiible.
I know I am missing something, can someone fill me in?
I have a situation where I need to dynamically disable certain controls. I will not be knowing the type of control. I tried to use FindControl(""), but this does not have the "Enabled" property, it only has "Visible" property.
<div id="GridDiv" runat="server"> gridview would go in here.... </div> GridDiv.Visible=false;
However, because I have a Div in LoginView2 I have to find with findcontrol.
This is not work:
LoginView Div = LoginView2.FindControl("GridDiv") as LoginView; Div.Visible = false;
Object reference not set to an instance of an object. Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.NullReferenceException: Object reference not set to an instance of an object.
Source Error:
[Code]....
Line 785: Line 786: Line 787: Div.Visible = false;
I get the following error: TagCloudControl1 is a field but is used like a type and an object reference is required for the non-static field, method or property..
I have a textbox that serves as a status panel (box) on the masterpage. I use the same code on two different content pages. On one content page, the write occurs. On another content page, the write does not occur. I even moved the code that was working into position on the erring page and it still doesn't write.
