dataview

问题 I have this function button_Search1_Click to search for comments that match keywords, then display these flagged comments in dataGridView_flaggedComments . Next, if there's any changes on the comboBox_stockIndex , I want the filter to take place i.e. filter the flagged comments in dataGridView_flaggedComments with the Tickers_Ticker_ID of 1 . But when I do that, all the comments (regardless flagged or not) belong to Tickers_Ticker_ID of 1 display on my dataGridView_flaggedComments . It should

问题 I am writing a program that generates a single large table of information. The table is made up of two types of columns, columns that contain quantities, and columns that contain properties. Quantities are numeric values that can be summed, properties are qualitative values that attribute the quantity values. If the data is in a table in a database I can write a query that selects specific properties and quantities and sums the quantities that have the same value for the selected properties.

问题 I have created a method to remove duplicates froma a DataView. I have not option to change the SQl query , so my only option is to modify the existing data retrieved from the Database in the DataView. DataView data Id, Name, Date 1, Paul, 12-05-2011 2, Mark, 12-05-2011 1, Paul, 12-05-2011 2, Mark, 12-05-2011 My method is: private static void RemoveDuplicates(DataView source, string keyColumn) { DataRow[] dataRows = new DataRow[source.Table.Rows.Count]; source.Table.Rows.CopyTo(dataRows, 0);

问题 I used the following links to display my 2 dimensional data in a table: How to bind an 2D array bool[][] to a WPF DataGrid (one-way)? Change DataGrid cell colour based on values All is working except that the background color is not changing (and the converter method is not even being hit). Can someone tell me what's going on? Below I post a complete, minimal example. I'm not wedded to any of these ideas (using a DataView to bind my IEnumerable> for example) so feel free to suggest

问题 I have a .aspx file with a datagrid in it: <asp:DataGrid ID="Gifts" AutoGenerateColumns="True" runat="server" AllowSorting="True"> </asp:DataGrid> The .aspx.vb file associated with it fills it in with a datagrid object. Protected WithEvents Gifts As System.Web.UI.WebControls.DataGrid Public GiftData As DataTable Gifts.DataSource = New DataView(GiftData) Gifts.DataBind() That all works fine. However I want to format one of the columns with a particular date format. Is there a way of doing that

问题 I have a DataTable with 10 rows say one of the columns numbered 1 to 10 randomly. I want to sort them. usually, I do this: DataView Dv = new DataView(dtPost, "", "views desc", DataViewRowState.Unchanged); repeater.DataSource = Dv; repeater.DataBind(); Now, I just want to bind the top 5 rows in this Dataview. If I try this: DvPopBlogs.Table.Rows.Cast<System.Data.DataRow>().Take(5); OR DvPopBlogs.Table.AsEnumerable().Take(5); //this usually works if sorting wasnt necessary It works, but the

问题 I have an Asp.net gridview on a page, when a buttonfield is clicked (instead of select) it opens a popup form (my popup not asp's) which contains the detail of the gridview row displayed in an editable DetailsView. (This approach has been used because the grid contains 20 wideish columns and it is easier to edit / update in the detailsView format) The DetailsView takes any amendmends and writes them back to the table, fine, but the underlying Gridview is never visually updated unless of

问题 I need to AJAXfully filter by users list of PsDoctrans which is shown in a Wicket DataView . final TextField txtName= new TextField("user"); final PSDocDP dp = new PSDocDP("username"); DataView<PsDoctrans> dataView = new DataView<PsDoctrans>("unproc", dp) { @Override protected void populateItem(final Item<PsDoctrans> item) ... }; PSDocDP is: public class PSDocDP extends SortableDataProvider<PsDoctrans> {...} final WebMarkupContainer wmc = new WebMarkupContainer("container"); wmc.add(dataView)

问题 Similar Questions Similar questions have been asked before, but always have specific qualities to the data which allow a more targeted "split it up and just sort by this part" approach, which does not work when you don't know the structure of the data in the column - or even the column, frankly. In other words, not a generic, "Natural" sort order - something roughly equivalent to SELECT * FROM [parts] ORDER BY [part_category] DESC, [part_number] NATURAL DESC My Situation I have a DataView in

问题 I have the following code, which does work: var dataSource = (from p in dv.ToTable().AsEnumerable() where filter(p) select p).AsDataView(); filter is a Func<DataRow, bool> dv is a DataView dataSource is being used as a DataSource for a DataGrid . Anyhow, it strikes me as a bit ugly that I am calling ToTable , AsEnumerable , and AsDataView , so I was wondering if there is a way to reduce the number of calls. Is this as simple as I can make it? Edit: The DataGrid has pagination, and I make use