I am trying to construct a datagridview that will show a number of rows with a particular set of fields, but also allow me to show some 'subrows' ie rows that can be expanded below the parent row in question (if that parent row has these children - part of the datasoruce) the only real problem is that the expanded rows will have completely different fields(columns) is this possible with a standard datagridview in a windows form? I am presuming somehow I would have to shoehorn in a new datagridview in a row of the parent grid. We do have the Syncfusion suite which includes the gridgroupingcontrol. But after much hair pulling and other pains. I have given up on that completely. Short answer: No. You need a custom component for this.
Hierarchical Data Grid View
There are a lot of good efforts out there on making a hierarchical treeview. Like in the CodeProject article or from Component One (paid). I understand you want different fields on the subnodes though, and I'm unsure to what extent these controls support that. I know FlexGrid support some customization of columns for different rows, but it will probably involve quite some manual work - databinding is not well supported. Finally, you might want to consider if your idea of a customized GridView is the best approach to your problem in the first place. Could a Master-Detail-view be a better approach?
PS: I'm not affiliated with ComponentOne, but I've used FlexGrid in a project.
From Hierarchical DataGridView is a Windows Forms component that extends DataGridView component included in Microsoft.NET Framework 2.0. It is a unique grid control that organizes, edits, and displays data in a hierarchical form. Hierarchical DataGridView can be seen as a mixture of Visual Studio 2005 DataGridView, Microsoft Project or Microsoft Access data table, and simple Excel sheet.
If you are a Visual Studio 2005 developer and the terms such as data relation, data structure, multilevel data, master-detail, parent-child, category-subcategory, tree or recursion describe the problem that you have, Hierarchical DataGridView is the right component to solve it.
Link for csharp, asp.net, ado.net, dotnet basics and sql server video tutorial playlists Link for text version of this video In this video, we will discuss about drilling down and displaying hierarchical data in gridview controls using objectdatasource control. We will be using the following 3 database tables for this demo. TblContinents 2. TblCountries 3. When the page loads, a gridview should display the list of all continents available in tblContinents table 2. When a 'Select' button is clicked against a continent, all the countries belonging to the selected continent should be displayed in another gridview. Along the same lines, when a 'Select' button is clicked against a country, all the cities belonging to the selected country should be displayed in another gridview.
Use sql script from Part 34 using the link below to create and populate the required tables. To use objectdatasource controls, to retrieve continents, countries and cities data, we need to create respective data access layer class files. Step 1: Implement ContinentDataAccessLayer.cs. Step 2: Implement CountryDataAccessLayer.cs. Step 3: Implement CityDataAccessLayer.cs. Step 4: Build your solution, so that the respective data access layer classes are compiled.
Step 5: Drag and drop 3 gridview controls and 3 Objectdatasource controls on webform1.aspx. Step 6: Configure ObjectDataSource1 control to retrieve data from ContinentDataAccessLayer. Use GetAllContinents as the SELECT method. Step 7: Asscociate ObjectDataSource1 control with Gridview1 control. Setp 8: From GridView1 - GridView Tasks pane, please make sure 'Enable selection' checkbox is checked. Step 9: Configure ObjectDataSource2 control to retrieve data from CountryDataAccessLayer.
Use GetCountriesByContinent(int ContinentId) as the SELECT method. Dare nabi par para rahoon ga mp3 download skull. The value for the parameter - ContinentId should come fromt the selected row in GridView1 control. Step 10: Asscociate ObjectDataSource2 control with Gridview2 control.
Step 11: From GridView2 - GridView Tasks pane, please make sure 'Enable selection' checkbox is checked. Step 12: Configure ObjectDataSource3 control to retrieve data from CityDataAccessLayer.
Use GetCitiesByCountryId(int CountryId) as the SELECT method. The value for the parameter - CountryId should come fromt the selected row in GridView2 control. Step 13: Asscociate ObjectDataSource3 control with Gridview3 control. Step 14: Flip the webform to HTML source mode and set GridView1 DataKeyNames property to 'ContinentId' GridView2 DataKeyNames property to 'CountryId'.
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. Introduction The TreeGridView by Mark Rideout is a great control. It allows us to display related data in a hierarchical form (a tree!), but I needed it to be sortable and support data binding. The HierarchicalGrid does that, the quick and dirty way.
It displays the table relations in a hierarchical form and sorts it through the levels too. Also, this is my first contribution and any feedback would be greatly appreciated! Background I would really recommend you see the TreeGridView. Using the code There's a new class called DataGridSource, and the DataSource of the HierarchicalGrid must be of that type. It takes three arguments: the dataset, a list of display columns and a list of group columns. Now, what are those? The display columns are names of the table columns to be displayed, and the group columns are columns that group total values, like sum, average, product, etc.
Let's suppose that we have two tables, one with a list of people and their fruit preference, and another with where and when each person bought their favorite fruit. For instance, the display columns would be: List displayColumns = new List; displayColumns.Add( ' id'); displayColumns.Add( ' Name'); displayColumns.Add( ' Fruit'); displayColumns.Add( ' BoughtFrom'); displayColumns.Add( ' Date'); Now we have a list of columns to be displayed. What about the group columns? Let's set them: List groupColumns = new List; groupColumns.Add( new GroupColumn( ' Quantity', GroupTypeEnum.Sum)); Pay attention to the GroupColumn type.
It groups the name of the column and the type of operation that it should do on its child results. We added a new sum of quantities.
We have our display columns list and our group columns list. Let's get our dataset. There is a combination of two things going on to create this error: 1) the IsAssignableFrom is being used in reverse. Line 264 Should read: if ( typeof(TreeGridCell).IsAssignableFrom(cell.GetType)) instead of: if (cell.GetType.IsAssignableFrom( typeof(TreeGridCell))) The docs for IsAssignableFrom read 'true if c and the current Type represent the same type, or if the current Type is in the inheritance hierarchy of c,' where the call would look like CurType.IsAssignableFrom(c). 2) This only showed up if i didn't include the DataRelation Field as one of the 'displayColumns'. Another symptom was that the children of the top nodes weren't displayed either. Brunobert 27-Apr-10 4:58 27-Apr-10 4:58 I'm trying to use this control in my application.
Hierarchical Data Grid View C#
I realized that it just works fine if, in my windows themes configuration, i select the windows xp theme. If i put in classic windows theme, the control returns me an error Error: 'Visual Styles-related operation resulted in and error because no visual style is currently active' I tried to enable the 'Enable XP Styles' in application properties, but it doesn't work either. My point is, my application can't go down because of a simple theme windows configuration, agree? Thanks a lot.