datagridview

问题 I have some tables in the db: Items Manufacturers Categories Cities Regions ============== ================ ============ ======== ========== ItemId ManufacturerId CategoryId CityId RegionId ManufacturerId CityId NameCategory RegionId NameRegion CategoryId NameManufacturer NameCity NameItem Weight I am displaying the list of the items in DataGridView using this code: DataSet ds = new DataSet(); SqlDataAdapter da = new SqlDataAdapter("select * from Items", connectionString); SqlCommandBuilder

问题 I have Data Table with around 66 columns and 4000 rows each Row comes to some category of some conditionally based coloring I am very new to WPF actually i have implemented some condition based coloring the rows in datagridview but WPF as component DATA GRID How to achieve cell based coloring based on cell value ? in WPF earlier i was doing some thing like this in Win forms public DataGridView colorGridview(DataGridView G) { string[] cellsrequired = {"Colnames1",""colname2}; foreach

问题 I have on a usercontrol a datagridview. I created a datatable and I set the source of datagrid to be this datatable. I want,at runtime,to be able to add how many rows on gridview I want at every button click. My code : private DataTable CreateTable() { Datatable table=new Datatable(); table.Columns.Add("Name".ToString()); table.Columns.Add("Size".ToString()); DataRow dr = table.NewRow(); dr["Name"] = "Mike"; DataRow dr2 = table.NewRow(); dr2["Name"] = "Ryan; DataRow dr3 = table.NewRow(); dr3[

问题 Im back again with another DataGidView question I am creating an application that allows the user to create a ticket for products purchased This form consists of a DataGidViewwhich allows the user to record the product details along with price and quantity information. Currently the DataGidView is data bound and data is saved using a data adaptor and command builder at runtime The columns are created automatically and then i set properties such as formatting options as follows Private Sub

问题 I have a winforms application that uses a datagridview. When I access the EditedFormattedValue of a cell while it is in edit mode, sometimes the whole cell turns black. Is this a feature of the datagridview, perhaps some sort of validation feature I need to turn off? I have found a couple of other mentions of this problem while googling. None of the threads seem to know what the answer is either: Here not calling Application.DoEvents solved the problem, but I am not calling DoEvents. http:/

问题 My main application form (WinForms) has a DataGridView, that uses DataBinding and Fluent NHibernate to display data from a SQLite database. This form is open for the entire time the application is running. For performance reasons, I set the convention DefaultLazy.Always() for all DB access. So far, the only way I've found to make this work is to keep a Session (let's call it MainSession) open all the time for the main form, so NHibernate can lazy load new data as the user navigates with the

问题 My main application form (WinForms) has a DataGridView, that uses DataBinding and Fluent NHibernate to display data from a SQLite database. This form is open for the entire time the application is running. For performance reasons, I set the convention DefaultLazy.Always() for all DB access. So far, the only way I've found to make this work is to keep a Session (let's call it MainSession) open all the time for the main form, so NHibernate can lazy load new data as the user navigates with the

问题 I want to know if there is way to not trigger CellValueChanged event in DataGridView when the value is changed programatically? I only want to process that event when the user changes the value manually, like by clicking or typing in one of the boxes. In my application I also set the value programatically and do not want to process that event. Thanks, Ritesh 回答1: Add a conditional to your handler that evaluates whether or not the handler should be used. Set the value to true when you are

问题 I've got a DataGridView which is bound to a DataSet being returned by an unknown-at-design-time SQL query (well, I know what the queries are, I just don't know which one the user has selected). I allow the user to select a set of rows from the table and hit an OK button, and I would then like to copy those rows to a new DataGridView. Naively, I used code along the lines of: DataGridView_New.DataSource = DataGridView_Old.SelectedRows This gives me a number of rows in my new DataGridView equal