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.NET Forum / Languages / C# / June 2007Can a List object be bound to a DataGridView control?
Hello, I am writing an application in c#. I have a List object that I would like to bind it to a DataGridView control. Can I do that, and if so how? If I can not do that, is there any other way that would bind a List (or a similar object) to the DataGridView control? Thanks Eitan If you mean List<T>, then absolutely... just set .DataSource = theList; However! If you want proper change notifications, then note that BindingList<T> is a better option - same thing, but the grid will show updates made independently (assuminng your object model itself supports notifications). Marc Thanks for your answer. I added BindingSource control to my Form. In the BindingSource control, the DataSource only let me select an object such as the object of the Form and not the BindingList I declared. In the "Data Source Configuration Wizard" I selected an Object, the drop down list of the "Select the Object You Wish to Bind to" only shows the assemblies not the BindingList... Thanks Eitan > If you mean List<T>, then absolutely... just set .DataSource = > theList; [quoted text clipped - 5 lines] > > Marc Design-time binding (in the way you describe) can be done - all you need to do is select the Type that you are interested in; so, if you want to display a selection of Order objects in the grid, then select (via the picker you mention) the Order class. This will generally setup a BindingSource etc for you. Then, at runtime, you need to tell it about your orders, so then you would set: someBindingSource.DataSource = theList; where theList could be anything suitable - a List<Order>, BindingList<Order>, etc. If you do the same entirely at runtime you can avoid having the BindingSource in the mix, but this can sometimes be useful. Marc Hello Marc, Thanks for your answer. Can a DataGridView that is bound to a class, say class ABC, that has more data variables that I would like to show on the DataGridView: For example, ABC has the variables: Var1, Var2, Var3 & Var4. I would like the DataGridView to have only 2 columns that will be bound to Var2 & Var3 of class ABC. Thanks Eitan > Design-time binding (in the way you describe) can be done - all you > need to do is select the Type that you are interested in; so, if you [quoted text clipped - 12 lines] > > Marc Yes; if using auto-generated columns, simply remove the ones you don't need (you may need to turn off AutoGenerateColumns [or whatever] afterwards). If adding columns manually, simply don't add the ones you don't need. Marc Marc, The last question I asked can be asked also if instead of the class ABC we would have a List or BindingList ABC? Thanks Eitan > Design-time binding (in the way you describe) can be done - all you > need to do is select the Type that you are interested in; so, if you [quoted text clipped - 12 lines] > > Marc Please clarify what you mean... You can't really use a single instance of ABC as the DataSource [with a grid] unless this is a collection itself (IList/IListSource) - but I don't think this is what you were suggesting. So you need to use *some* form of collection of ABCs - and List<ABC> or BindingList<ABC> are common choices. But others would work. However, at design time you must bind to the Type of ABC - you will often see this in the Designer.cs as "yourBindingSource.DataSource=typeof(YourNamespace.ABC);". This is a feature of the IDE. If you don't use the IDE for binding you can omit this step and bind just to the data. Marc Hello Marc, Thanks for your answer. I do have a BindingList of this ABC and that is what I meant. Eitan > Please clarify what you mean... > [quoted text clipped - 12 lines] > > Marc Free MagazinesGet these publications absolutely FREE for up to 12 months. There are no hidden fees and no obligation. Simply choose a title, complete the application form and submit it. Read more ...
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