Forms Data Controls :: Displaying ArrayList In GridView (vb.net)?
Feb 9, 2011
I've been trying to bound an arraylist to a grdview for display and managed to work out the following:
At the point where rows are added to dt, i'm trying to get arraylist (Tweet) to be read row by row to insert each of it's fields into dt. There is no error but when run in browser, each cell of the gridview shows 'DataExtraction.Tweet'.I'm not sure where to go from here.
I have a GridView control of 5 columns out of which 2 are actually computed (there cell values comes from column 1, 2 and 3) columns. I want to save all the values of my gridview columns in a 5 dimension ArrayList and then lateron bind that ArrayList with a repeator control.
I want to bind a gridview with an arraylist with AutogenerateColumn=FalseHow to Bind it by taking boundfield.I have to present a template field also in that grid at 2nd position in columns.Arraylist contain string Values.When I bound it with AutogenerateColumn=true the headertext of column shows text 'Item' it means it has item field that should bind but when i give datafield property of boundfield to 'Item' it gives error that property 'Item' not found in selected datasource.
code to update a session arraylist and then rebind back to the Gridview. I basically have a Gridview with an Edit link allowing the user to edit a field in the grid. When they click the Update link, I want that position in the session array to get updated. I am not storing this data to a database.
I was assuming my code would need to go in the RowUpdating event like this:
I have a gridview that contains template fields with textboxes that is used to look up inventory items. The page loads using an arraylist to display a gridview control with a predetermined number of rows. There is also drop down control that allows the user to add additional rows to the gridview if needed.
Currently when a user has already entered some data if you use the drop down to add more empty rows all the original entrys are removed. I want to save the original data and then add empty rows at the end.
Private Sub LoadDataGrid(ByVal numberOfRows As Integer) Dim Counter As Integer Dim GridList As New ArrayList For Counter = 0 To numberOfRows GridList.Add(New LibVB.Form2VB(Counter)) Next gvEnterParts.DataSource = GridList gvEnterParts.DataBind() End Sub <<
I'm lost, kind of a newbie to .net, have been working on this for 2 days! d.
I am working in asp.net 3.5 with c# and sqlserver 2005 as database. I my project i have to select some of the checkbox of a gridview and update the database according to that. I want to store all the selected box in a arraylist and update the database according to the selected list . But i am not getting how to proceed.
I have one filed that is encrypted using Rajindal algorithm and stored in MSSQL db.When I retrieve that column in gridview it's displayed in encrypted. I have the code that decrypts it but the problem is:How can I all loop throw this column values in the gridview and decrypt them all and display it in the gridview decrypted.See my code below:
<body> <form id="form1" runat="server"> <div> <asp:GridView ID="press_dl" runat="server" AutoGenerateColumns="False" PageSize="1" ShowHeader="False"> <Columns><asp:TemplateField><ItemTemplate> test head test shortnews </ItemTemplate> <HeaderTemplate> </HeaderTemplate> </asp:TemplateField></Columns> </asp:GridView> </div> </form> </body> Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load If Not Page.IsPostBack() Then bind_press() ' bind_events() End If End Sub Sub bind_press() ds = Nothing ds = New DataSet Dim query As String query = "select top 1 * from tbl_press order by press_id desc" myConnection.Open() da = New OleDbDataAdapter(query, myConnection) da.Fill(ds, "Press") myConnection.Close() press_dl.DataSource = ds.Tables("Press") press_dl.DataBind() End Sub its dislpayes like this test head test shortnews test head test shortnews
Im displaying a Gridview full of data but the column "Country" is displaying the CountryID and I want it to display the Country 'Name'", same with State/Prov and a Status column I have. I've looked around at BoundField Properties and such and can't seem to find where I can configure this. Is it straight within my DataSource? Here's my code:
Here is my DataSource Code
Is it within the SELECT statement of the DataSource where I can need to configure using "Country" not "CountryID"or "Status" not "StatusID"?
I'm having trouble displaying the value of my textbox on the gridview. For example i have a column named Quantity Received which at the moment has no values in it then i have a textbox that would enter value for that said column .
FrameWorks.fwReplenishmentRecWi qtyrec = new FrameWorks.fwReplenishmentRecWi(); qtyrec.QtyReceived = Convert.ToInt32(txtQuantity.Text);
I have a Business object (Customers) with about 30 fields/attributesNow, I want to display list of Customers in gridview so I fetch them through my object datasourceBut gridview only uses 8 fields/attributes of an object and rest are unused or wasted Do I design sub objects containing only gridview fields ? How do I go about this problem ?
As of today my gridview is no longer showing when I run it in my browser. I have made changes to the database recently but the code behind and aspx file remains the same. No errors are coming up. Just the gridview is now blank and it was working perfectly shortly before.
I want to display an image in my gridview. The only thing is my datatabse table is returning true if there is an image and false if there is no image and I am binding my gridview with dataset. This dataset contains a colun called hasAttachments as true or false.
Is it possible to display image in the image field?
is no image.I am binding my gridview to a a dataset. I was wondering how can I display an image if the image field is true in the database.
I had an issue trying to use autogeneratecolumns so since I know what columns to expect I Bounded them. Problem is after I assign the datatable to the gridview and then bind it I do not see it on my page. I know the datatable is full because I visualized it in VS2008. Code below.
After a user would select some data it will build a query for data that should go into the gridview. Here is the query in the code behind (this is in the Button Click protected void)
On one of my pages I display a Gridview. This contains a list of questions generated by a SQLDataSource, with a dropdownlist on each row containing the answers for that question. The answer values can be different depending on the question, so I populate them in the RowDataBound event for the gridview, using question information.
As the list of questions is longer than the page I have placed the gridview within a Div which allows me to use scrollbars to navigate the gridview. I also use some methods to preserve the location of the last question answered - so that on answering a question, the gridview does not reset to show the first part of the gridview.
This works fine for IE7, which is what I have been using for the development, and which part of my customer base uses. However, the other part of my customer base uses IE6, which causes a problem.
When an IE6 user attempts to answer some questions, they run into issues. Should they scroll down the gridview, when they select a value from a dropdownlist (Effectively, when they answer a question), there is a postback and all of the visible (i.e. onscreen) dropdownlists appear to be cleared. However, on mousing over any of the dropdownlists, their value is then shown. On using either the scrollbar, or on using the mousewheel to scroll the gridview, all the dropdownlists are 'refreshed' and their values are shown.
At no point does the application appear to lose the data, it is just not showing it until there is a mouseover or the gridview is refreshed. Another odd aspect of this is that this does not apply to the first 5 rows of the Gridview. Any of these can be altered without there being this display issue. Should the gridview be scrolled enough to show some of the first 5 rows and some subsequent rows, only the subsequent rows will have this display issue.
I have tried various things to correct this - originally I called my retrievescrollposition method on the SelectedIndexChanged event of the dropdownlist, but have since moved it to Page_Load as the Else branch of if (!IsPostBack). I tried rebinding the DropDownlist in the SelectedIndexChanged event, but this only helped with the Question I was answering - the display of any other onscreen questions was still affected.
I have a Table (in SQL Server) that is being updated roughly every minute or so with new records being inserted from various sources. The number of records inserted in this duration varies from a few records up to dozens of new records. I am using an update panel to rebind my data every minute to keep the GridView current. Now that I have the data refreshing I am looking for a better solution than reloading the data every minute. how to best keep my GridView up to date? Here is what I would like to accomplish:
1. Load the GridView and refresh the contents every minute. (60 second intervals)
2. When the GridView is refreshed every minute I would like to append only the new records to the existing grid, rather than bringing back the entire result set with each round trip to the database.
3. I would like a visual cue to identify the rows that have been inserted into the GridView. If new rows were to flash/flicker with a background color (yellow) that would be ideal.
Am I even using the correct control for displaying real time data, or are their other options? I essentially am looking to find the preferred method of displaying data that is being updated in real time in a web application. I'm hoping there is a solution involving AJAX but I haven't been able to find much on The Google. I am open to changing anything and everything about my approach -- this is largely a learning exercise. For testing purposes I am currently using LinqDataSource in conjunction with a GridView in an UpdatePanel being refreshed by a Timer control every 60 seconds. Informational: I have also started playing with the [URL] in place of the Timer control. However, for the purposes of this example I would be content to achieve the desired behavior using native controls as I have described them above.
I'm trying to display data from a CSV file into a GridView control and it's not working. The code does NOT error out, but for some reason the data isn't being displayed in the GridView. What am I doing wrong?
I am currently trying to figure out the best way to handle a data formatting issue. I have a stored procedure that pulls back basically all the data I need, but using a gridview doesn't really give me what I need.
For example...currently the gridview displays data like:
I have a Transport Detaisl in DB , i want to dispay data on gridview with marquee scrolling up. Cabs are scheduled for drop every hour. So if drop is at 7pm i hav to dispaly on data of that hour from 6:30 to 7:15 later after 7:15 i have to display next hour data ie 8:00 pm drop data. I am able to get scrollin g data on gridview but how to schedlue it to scroll for such timings
In one of my application, I have around 2000 records which i am displaying in gridview with normal paging.
Now I want to change this paging facility and would like to show a "more" button at the footer(just like [URL] has). The moment user clicks it, the next set of data will be retreived. This will go on till all the records are fetched.
I have a gridview with 20 records and I have scroll bar to scroll down to view the records.I m displaying respective row data when click on the select button in grid view. The problem is whenever I select the
row, the gridview refreshes and scroll bar is going up. Ofcourse it is displaying correct data. but the gridview refreshes and scroll bar goes up.I want the selected row to be shown when I select that row.