I have an asp.net application in which I am using a grid view. Paging and sorting are applied to the grid view. One action what I am doing is on click of any grid view row, am getting the column values of the selected row and redirecting to the other page.
The problem is after the grid view is sorted, if I click on any of the row in ayy page (paging index), am getting only first page values even though the visible row is different.
I am getting the row values in gridview_rowcreated() method and putting in some variable. In sorting scenario, before sorting is done, the gridview_rowcreated() method is called but not after the sorting is done.
In case you still need an answer to this...
You should be using the gridview's SelectedIndexChanging event with something like the following:
gridView.Rows.Item(intNewIndex).Cells(# of column, zero-based).Text
This will give each cell's current value, you'll just have to loop through each cell and assign each cell's value to desired variable(s).
Hope this helps!!!
Related
I have a DevExpress ASPx GridView control and am trying to implement sorting for the grid columns.
The gridView contains has integer values in one column, text in the rest. I also have a column which contains hyperlinks and is added through the code behind during run time.
I am using the Aspxgrid_CustomColumnSort event for sorting the grid.
I can achieve the sorting for the column which contains the integer values and texts successfully, however the same code is not working for the column with hyperlinks.
When I click on the column header the hyperlinks sorts in ascending order,
but when I click the header the second time the grid isnt getting sorted in the descending order, the hyperlinks are sorted in randomn order ( neither ascending nor descending)
And, further clicks on the header do not do anything.
Any advice/suggestion will be greatly appreciated.
Maybe this link will help: http://www.devexpress.com/Support/Center/p/B145444.aspx. In this page, someone had reported an issue using the GridViewDataHyperLinkColumn.
my application needs to allow users to insert rows below the current datagrid row. My solution is to to add a row to the dataproviders collection. This works, but the row does not appear beneath the current row the user clicked on.
The Datagrid has a default sort order (date ASC), which re-orders the data...so this seems to affect the position of the row in the grid.
Any ideas how to fix this?
Two possible answers:
1. define your own sort function that sorts according to item order in dataprovider (i.e. it does nothing), and assign it to the sortFunction property
2. simply comment out the sorting of the data inside the component.
I'm having some problems with the _SelectionChanged event on an ASPX grid view using devexpress v9.3.
The ASPX Gridview that is on the page doesn't recognize rows where some cells have no value. I can select rows where all of the cells have been populated and the keyFieldName is returned, however if some of the rows have no data it wont return anything.
I know each row has been assigned data for the KeyFieldName as I have outputted this to the grid.
Can anyone help me please x
Found the issue. The grid view in my business logic was incorrect and I had applied the wrong variable to the keyfieldname.. Doh!
My problem is that empty rows (if there are more rows that dataSource items then there are empty rows) look identical to rows binded to dataSource items which are empty (see the difference?).
The only way to know the difference is to hover over them with the mouse, and if they are empty there's no color change, otherwise there's the blue background of the selection..
I want to change the color or in some way hide empty rows, those that are not bound to a dataSource item.
How can I accomplish this?
You can format your DataGrid using ItemRenderer.
The itemRenderer is a display object that get the data from the data provider and display it in the grid.
Writing your own logic can help your specific data display in general. in this case, check for data on the ItemRenderer object creationComplete. it the data is null or empty - display a sign (or whatever).
See this link as reference:
http://blog.flexexamples.com/2007/08/20/formatting-a-flex-datagrid-control-using-a-custom-item-renderer/
Enjoy!
I'm not sure if this is exactly what you are looking for but I cut off my rows at the end of my dataprovider like this:
myGrid.rowCount = myDP.length();
This can of course be modified with some simple logic to have min, max, or if it's a data entry type of grid length()+1.
How Can I find all the rows that has been changed in gridview. I can not use Ajax in any form
First get the contents of your grid before it was changed (such as caching the results of the original gridview datasource binding). Then go through the dataset/datatable/however you want to store it, and compare the contents with the current rows of the gridview.
There's no real efficient way to do this, no method like GridView.GetAllChangedRows(). So, what you might do instead is keep a behind the scenes List that you add to each time a row is modified (use the RowUpdated method), then clear this list when needed.
It depends upon how many columns you want to edit in a row.
If you have only one editable column in a row then you can associate a javascript method with that control which you want to modify and in that method you can get a rowid which you can save in another hidden field and in server side you can get all rows whose ids are stored in hidden field.
If you have whole row editable in that case the best approach I think you should save the original data source somewhere and also set a javascript method with rowclick event to get rowid which user selects. Then when user clicks on submit button get all rows whose row ids are stored in hidden field then compare those with same rowid in datasource. This is the best approach from my point of you.
Let me give you an example, suppose there are 1000 rows in a grid and user clicks on only 180 rows. In that case we will compare only 180 rows and wont compare rest of the rows.
Please let me know if somebody has better idea then this.