C# - GridView.DataBind Not Refreshing The GridView?
Feb 13, 2010
To start I am using a MultiView control to step users through searching. The first page in the MultiView is just a search box with a button to preform the search.
The second page has the GridView, but I would like to keep the search box and button for the user to search again if they didn't find the user they were looking for.
When you search from page one and move to page 2 the GridView shows the correct results. But when it is on the second page with both the GridView and the search the GridView doesn't update. Below is the code I'm using.
[code]....
View 2 Replies
Similar Messages:
Jun 26, 2010
I'm working on a project where I have to create a page that displays the "health" of a system. I run a query and display the results in a gridview with a red or green icon next to it. This works fine when the page is first loaded. My problem is that I have a thread that runs a query every 30 minutes and rebinds the gridview but the gridview never refreshes even though the data has changed. How do I get the gridview to display the new results? The databound event never fires a second time even though I can clearly see that I have received new data. I assume I am missing something simple but I just don't know what. What am I doing wrong?
View 5 Replies
Nov 21, 2010
On my aspx page I use a popupmodalextender to show (and edit) some data that is contained in a gridview (gridview is on the same page). Popup works OK and also the editing of the data, but when I close the popup (from code behind) the data in the gridview is not refreshed.
Aspx:
[Code]....
Code behind:
[Code]....
Why doesn't databind() work until I refresh the page?
View 16 Replies
Mar 21, 2010
i'm opening a new window and passing on to it variables in a querystring, the values are loaded into a function that is filling my dataset and then filling my Gridview. after i press the button field in my grid to delete an item, the databind doesn't show the updated grid but remains the same. i've noticed that if i navigate back and refresh i see it correctly. in FF btw no problem.
the code:
this is used to open the new window
[Code]....
[Code]....
[Code]....
[Code]....
View 3 Replies
May 8, 2010
I am developing a usercontrol which has a gridview control in it.
Now I want to set the datasoruce property of gridview. Datasoruce will be a generic list (List<Class>).
How to do this ?
View 1 Replies
Jan 12, 2011
This is my setup: I've got a dropdownlist of people and a linkbutton next to it to add a person. the linkbutton makes an update panel appear. When clicking save, I want the data to be saved and the new person be selected in the dropdown. As far as I can tell, I have done this properly. After I save the data I refresh the dropdownlist and take the new person's value and set it as the selected value. When stepping through, it shows the ddl with the new person and the new person selected! BUT, when the page comes back, the ddl is unchanged, ie NOT refreshed. I thought it might be something with the Update Panel but I got a similar setup to work on another page! It also works on a nested Update Panel (not shown in the following code). Can you think of why this "deception" is happening?
Here is some of my code.
[Code]....
View 5 Replies
Jun 9, 2010
Can you databind a caption when using a gridview?
View 1 Replies
Mar 5, 2010
Why is there a need to explicitly call GridView.DataBind() to render the gridview. Why wouldn't it render by itself automatically like how it happens in Window Forms?
View 2 Replies
May 31, 2010
I have a gridview inside an updatepanel.After updating the gridview, accessing the individual rows does not seem to give the right row. For example:
protected void GridView1_RowCommand(object sender, GridViewCommandEventArgs e)
{
GridViewRow row = ((e.CommandSource as Control).NamingContainer as GridViewRow);
Row from the above code gives the values from the gridview before the gridview is refreshed/updated.
View 1 Replies
Sep 27, 2010
I have a blank/unbound GridView control on my form and I am binding it in the code behind like this:
GridView1.DataSource = _dataSet
DataBind()
Running this code populates my GridView control with all the columns and data that _dataSet has. I want to display only some of the columns, change the column names, and rearrange some of these columns too (i want the last column from the actual sql database table to be displayed first in my GridView).
View 2 Replies
Nov 16, 2010
I have tried a lot and have reached a dead end.
I have a to show multiple gridviews on one page and all these are getting populated dynamically.
i have figured a way to populate the gridview dynamically and display them, but i cannot get how to modify these values and display them as i want.
here is the code. for .aspx page
[code]....
View 3 Replies
Jan 26, 2011
I got a GridView in ASP.Net in which a user control is placed:
<asp:GridView ID="GVWunitcollection"
CssClass="gridview"
runat="server"[code]....
I bind the GridView to a List<T> filled with custom 'Unit' Classes. Each Unit consists of several properties to fill the usercontrol. (The user control holds a table, and some labels and textboxes).How can I achieve this? Is there a simple way to bind each usercontrol to the appropriate Unit?By the way, this is my way to mimic a "dynamic" behavior of multiple usercontrols on a page. If there's a more simple way, I would like to know how!
View 2 Replies
Feb 16, 2012
I want bind more than 10000 records in gridview and improve performance.
View 1 Replies
Feb 11, 2010
Here is the setup:
VS 2008Update PanelIn the update panel, is a gridview, and an asp:panel that contains some other controls, including the button I want to trigger the update of the gridviewThe gridview is tied to a sqldatasource, although I have tried multiple methods to get the data and all failed
Here is the problem:
User logs in and fills out the top part of the form. That submits some data to a table, returns the ID of the row submitted and makes an asp:panel visible (panel.visible=true). This update panel exists inside of the UpdatePanel. The user clicks a drop down list and selects a name. When this happens, another panel becomes visible, using the same process, to allow the user to enter data about the name they selected. So far, everything works.
What Should Happen next:
User clicks "Add" buttonDatabase is updated with the data enteredDatasource refreshesGridview refreshes - It is not visible at load because there are no records for it to show.
What Actually Happens:
User clicks "Add" button Database is updated with the data entered - This has been verified Datasource should update, but not sure it is Gridview does not show.
Here is the code snippet for the Update Panel:
[Code]....
View 8 Replies
Jun 3, 2010
I've a gridview bound to linqdatasource1 and a details bound to linqdatasource2 (for searching).
When I update the data on detailsview, my gridview is not updating. I've tried handling various gridview events and databinding the gridview in code but it doesn't seem to work.
View 1 Replies
Aug 4, 2010
I have bounded Gridview through Wizard. It's working fine. but i want that if i add new data it should be visible in the gridview. But gridview not refreshing. I know i can perform this programmatically . but i want to do it in this case also.
View 1 Replies
Feb 16, 2010
I'm developing a web application in ASP.NET 2.0 using C#. In this application in one of the pages i have a grid view which is populated from database on click ofa search button in that page.
On double clicking on any of the rows of the gridview, the particular row's details are populated in to new page. If the user modifies any details and saves i have to redirect to the previous page (i.e.. the page with the gridview). I used history.back(), the page gets redirected but the changes are not being updated in the grid as that doesn't get refreshed.
View 7 Replies
Oct 8, 2010
I have a Gridview within an UpdatePanel that shows some data from my Database. When you click on an edit button, it opens up a detailsView within a ModalPopupextender. When you enter in data in the textBoxes in this detailView and click "update", the Database is updated but the popup does not hide. Then, when I close it manually by clicking "close", the gridView does not refresh unless I refresh the page. I was able to get this to work before, but after spending a week staring at this problem.
<asp:UpdatePanel ID="updatePanel" runat="server" UpdateMode="Conditional">
<ContentTemplate>
<asp:GridView ID="gvReservations" runat="server" CssClass="datagrid" DataKeyNames="dateSubmit"
AutoGenerateColumns="false" AllowPaging="true" AllowSorting="true" PageSize="10"
DataSourceID="mainTable" Width="95%" OnRowUpdated="gvReservation_RowUpdated"
[Code]....
View 1 Replies
Mar 17, 2011
If outside the loginView, the gridview can show correctly! Put inside Login View and use below code
<LoggedInTemplate>
<asp:GridView ID="GridView1" runat="server">
</asp:GridView>
</LoggedInTemplate>
((GridView)LoginView1.FindControl("GridView1")).DataSource = query;
((GridView)LoginView1.FindControl("GridView1")).DataBind();
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:
Line 22: ((GridView)LoginView1.FindControl("GridView1")).DataSource = query;
How to show GridView inside Login with databind in c#?
View 2 Replies
Nov 16, 2010
I have the following classes (pseudocode):
Item ( int Field1 )
ItemDetail : Item (int Field2, string field3)
If I set ItemDetail as the datasource for an asp.net gridview:
grid.DataSource = new List<ItemDetail>();
grid.DataBind();
Can I use Field1 in the GridView? If so, what is the correct DataBinder syntax? The following code blows up trying to cast to an Item:
<%# DataBinder.Eval(Container.DataItem, "Field1") %>
EDIT: And I'm a moron. I had copied the gridview and was calling a RowDataBound event handler for a different grid... Sorry to have wasted everyones time, but there is some good info here regardless if anyone has the same question. In the end, the public properties of the base class are binding correctly.
View 2 Replies
Jan 18, 2011
I'm binding an object to a gridview. The object (LeClient) consists of several variables, two of which are related to its phone number. One variable contains a string of digits (LePhone) and the other contains an int that represents the country code (LeCountryCode). I have an extension method for strings that works to format the string LePhone and that I'd like to pass it LeCountryCode as the parameter.
So far, on RowDataBound I have an event handler with the following line:
e.Row.Cells[5].Text = (string)(e.Row.Cells[5].Text).ToPhoneFormat(1);
I'd like to replace the 1 with the corresponding country code that's stored in the object LeClient associated with the row. How does this work? I tried
.ToPhoneFormat(e.Row.DataItem("LeCountryCode"));
View 1 Replies
Jan 25, 2011
i am getting following error on gridview.databind() Unable to evaluate expression because the code is optimized or a native frame is on top of the call stack , ThreadAbortException,it was working fine and suddenly getting error, i don't what's problem is?
View 6 Replies
Oct 29, 2010
am having trouble figuring this one out. Am using stored procedure and using databind for the gridview . i got the codes off other sites. I'm guessing its the code that i've underlined, how or what do i use as the datasource for the sorting event. I used the Session for the paging event and that works but not for sorting.
[Code]....
View 2 Replies
Sep 2, 2010
So I have a GridView and several events that can be triggered (such as filtering and inserting a new record) to manipulate the GridView. I want to make sure that I'm not calling DataBind on Page_Load, especially since I might have to call it again when certain events fire. Is there a way I can make it so I only have to call DataBind once on the GridView after Page_Load and anything else has fired? Like some event that will absolutely fire last where I can put my DataBind?
The reason I need to do this is because the DataSource for the GridView is set programmatically from a DataView when the page is loaded, so DataBind needs to run every time. Just, hopefully, not multiple times each time...
View 5 Replies
Mar 7, 2011
I have a gridview positioning issue that may have been answered elsewhere, but I couldn't seem to find a similar post...
I have a webforms app containing a paged gridview (e.g., 200 records - 50 rows and 4 pages).
When the user clicks on a button in a specific row, another web page is launched to process that button click. When the user closes that page to return to the main gridview, the databind event is rerun and the page redisplays the gridview starting at the top. However, I want to have the previous position maintained (like an html bookmark), so that the grid will automatically be scrolled to the the previously clicked gridview page and item.
Setting attributes such as "MaintainScrollPositionOnPostback" do nothing in this case.
View 1 Replies
