C# - Gridview PageIndex Not Changing On Page_Load Event
Aug 18, 2010
I'm trying to change pageindex on page_Load event but its not working. I can change page by clicking links in the page after page loaded.If this info necessary GridView in UpdatePanel.
protected void Page_Load(object sender, EventArgs e)
{
/*...Some Codes...*/
//I'm trying to change page like this.
GridView1.PageIndex = Index;
GridViewPageEventArgs ea = new GridViewPageEventArgs(GridView1.PageIndex);
GridView1_PageIndexChanging(sender, ea);
}
protected void GridView1_PageIndexChanging(object sender,GridViewPageEventArgs e)
{
GridView1.PageIndex = e.NewPageIndex;
}
How do I access GridView Page Index in RowDataBound event? I am assigning PageIndex to hyperlink on the gridview, for this I was planning to use "GridView1.PageIndex" in rowdatabound event. Problem is when I got second page in gridview (10 rows per page), the first row in the page shows page index as "0" and from second row it becomes 1. And if I goto third page, the first row in the page shows page index as "1" and from second row it becomes 2.
i have a user control that includes a dropdown list its actually a page navigator when the user press next page iam setting the index of the selector to the value of a hidden textbox where textbox is filled from javascript function. ex txtbox initially is 1. then when next pressed it is 2 and so on but when doing postbacks i.e pressing next it is not changing the index although in the debuy its showing its setting to the new value. as if there is something that is reseting it to the initial value after the page loads if i put my method in the prerender method its working fine. but in the page_load method its not updating to the new index changed. i need to put it in the page_load method as i have to register some event handlers for the navigator.
I have a gridview that I am using to host some data. Each row in the gridview links to a blob and I am using the SOnRowCommand event to click on the row and to stream the blob(which is an image) out as a file. This works fine. However when i implement paging on the gridview with the paging event the handler think it is an OnRowCommand event and executes the code behing the OnRowCommand handler and not the pageindex change event.
I have a data bound Gridview and in its EditItemTemplate I have a drop down list box used to select a technician name. In the OnSelectedIndexChange event I want to update two of the cells in the gridview with the Technician hourly rates. I know that from a database perspective it would be better to keep this data relational but that is not really an option here. I have gotten everything to work with the exception of actually populating the Gridview cells. If possible I would like to do it right in the OnSelectedIndexChange event but I have not been able to reference the cells.
this is performance related question. i have gridview and i wrote gridview selected index changing event .In that event i am enable and disable one button out side the gridview..
it is working fine and fast in my local system ..the problem is ,if i upload my application in server ,it takes more time to perform action in gridview selected index changing.how to avoid that problem ?
I have one textbox one button and one gridview on my webform, when Page loads all records are displayed on gridview, which works perfectly fine, now,I search particular records by entering id in textbox, which finds particular records and found row's background becomes red.which works perfectly fine too, my gridview's pagesize is 15 which means it display 15 records per page, Now,Problem is when i enter ID textbox to search record,but searched record is on another page,so,I want that When i click button to search, the page must be displayed where searched record exist. It displays first page even after search, How can i move to that page where record exist. what i have to code in click event
What I have is a command column with 2 link buttons, Review and Update. The Review link will show a more in depth look at the record (pretty much a detailsview) The Update link will allow the user to edit a few select fields. The Update link works fine, because I put the code in the GridView3_SelectedIndexChanged event. When I click the Review link (which has code in the LinkButton1_Click event), there is no data from the Selected row, because the row is not yet selected. Is there a way to trigger the selection BEFORE the button click event? It seems like this should be easy, but I haven't needed to do this before.
I have a grid view which is populating with a data source through databind. And the Datasource is list of objects.Now when the user selected a row I want to get the object of that row. I'm trying to get the row like this.
GridViewRow r = gvTruckCarrier.Rows[e.NewSelectedIndex]; DataRowView drv = r.DataItem as DataRowView ;
but the drv value is null. Could any body tell me how to get the object of the selected row?
Each row has a "View Large" link which passes the image id to another page whereupon the image is displayed in a DetailsView.
That page has a "back to album" hyperlink.
All this works nicely, however, no matter what page the user was on in the GridView, having clicked through to the DetailsView and then back to the GridView, the user ends up on page 1 of the GridView.
How can I ensure the user comes back to the same page in the GridView that they were on when they clicked through to the DetailsView? Do I need to pass the gv.PageIndex value and send it back; can I just somehow tell the GridView to "stay where it was"?
Here's the code for the GridView (it pulls the image info from a SQL db:
I need to get access to the page index of the gridview so I can correctly get some data from a coresponding array to set the cell's contol properties correctly. Below is what I've got so far. The ExcelObject is a class that houses both the data read in from an sutomer submitted excel file and a matching 2 dimensional array of characteristics that I use in this case to set the CssClass property. My problem is that when I enable paging for the gridview I don't get the proper datasource row index when the data is read by the databinder.eval; what I'm getting is the current row of the gridview being generated.
I am thinking this is a pretty simple problem... but I can not get it to function.I just want to get the calendar control to change a date which subsequently modifies a database select statement. I can get the current code to process without error, but the variable set is always a click earlier. Of course, I want the variable to be set upon any change in the calendar control.
public partial class NewBusinessReport : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) {
[code]...
Does this make sense? I just want it so that when SelectionChanged gets fired the Calendar1SelectCommandDate passes the correct date to the Page_Load page. The error I get now is:"The name 'Calendar1SelectCommandDate' does not exist in the current context"I get that the variable does not exist in the context. That actually seems to make sense based on what I have coded; however, I try to get that variable established and I still seem to be headed in the wrong direction.Basically, I have four calendar controls, one for a date (period 1 start, end and then period 2 start, end). I want to set the program so any change in that date sets off a new Select statement into the SQL server.
I thought that Page_Load events executed every time a page was loaded not just the first time. Am I wrong on this?
I have a Page_Load event that writes text to a label to display on the screen:
Output.Text &= "Welcome to my Website <br />" (Output being the ID of a Label control)
I also have an On_Click event for a button to display the same information:
Output.Text &= "Welcome to my Website <br />"
After clicking the button, I expected to see the output twice. Once for the page being reloaded and once for the click event. I thought that Page_Load events executed every time a page was loaded not just the first time.
i wanted to know how i could add a user to a role when they enter a page, i would like to create a page that when anyone goes onto that page, the code will add them to a role, lets say for example role "SpecialMember"
So when anyone enters that page, they will be added to the "SpecialMember" role, Does anyone know how to do this?
This should be an easy solution but I get stuck with it and hope I can get some advice/guidance from you:I have a simple aspx page with a Paypal button in it. The code shows in .aspx page:
I'm using ASP.NET 3.5 and C#.I load an SqlDataSource into a DataView on my Page_Load event. My SqlDataSource queries arandom record from the database. On my page I have an ImageButton, which when clicked uses a Response.Redirect("AnotherPage.aspx + "random id from database"). My problem is that when the button is clicked it fires the Page_Load event before the Response.Redirect takes place in the button_click event. This causes the current data(the users "id") that I had pulled from the database to be overwritten with new data(a different "id") from the database. So essentially the the page is redirecting to the 2nd random id that is queried from the db after the button is clicked and Page_Load is fired again, not the original id. Here's my code, hope it makes sense.Here's my Page_Load:
Can I put my dataview in another event or method so it's not called when a user clicks an ImageButton. Also I want the DataView to be repopulated on a postback/page refresh, just not on button clicks.
I have a GridView, here I am adding the LinkButtons at runtime to the GridView cells. I am also attacing an click event on these LinkButtons.
The issue is that when I populate the GridView from the Page_load the LinkButton click works, but if I move GridView polulation code in the Page_PreRender event the click event doesn't executes.
Code:
private void Page_PreRender(object sender, System.EventArgs e) { //does not fires the Click event of dynamically generated LinkButtons GridView1.DataSource = getDataTable();
I have a little question about building controls at runtime.
In my case I would like to create a checkboxlist in my page_load event
[Code]....
This control is a part of a wizard-Control. At the end after clicking the finisch-Button, the selected values have to sent by email to me. My question is, how can I get the ID of the Checkboxlist-Control whitch was build at runtime?I tried following workaround
[Code]....
But I get following error-message:
System.NullReferenceException: Der Objektverweis wurde nicht auf eine Objektinstanz festgelegt. Exception Details: System.NullReferenceException: Object reference not set to an instance of an object.
I'm working on a web application using VB.NET. In page load event am calling a remote web service which take time to bring the data. During this process none of the other contents on page are shown(render).
I want to call this remote web service asynchronously so that other data of page is displayed and web service data will be displayed when its available.
