I have two tables that are related to each other in a 1-1 relationship (each row in the main table has exactly one corresponding row in the second table).
I also have a winform in which I'd like to show the main table in a datagridview, and for each row selected in the grid to show the fields of the corresponding row of the second table in various textboxes below the grid.
I know how to bind a datagridview to a datatable. But I'm not sure about binding several textboxes to a single row in the related datatable. I don't know what is the best way to implement it.
I'm writing in VB.Net (but can read some code in C#), using VS2008.
Any help, hints or ideas will be welcomed. Thanks.
Best way to do it is that instead of using two tables, use a join and get result in a single table, bind that table to gridview, and hide columns which you don't want to display to user.
And then use cell click event of gridview and then get the index of selected row and then use
txtBoxName.Text = GridViewName["col_name",e.RowIndex].Value.ToString();
Related
I have data copies from datagridview1 to datagridview2 the data in datagridview2 I'm trying to figure out how to take specific columns and copy there contents over to another panel where that data will be put into labels, textboxs, comboboxes. I first did it with another datagrid but its far to crowded to hold all the controls along with the data. Below is and example picture of what I'm trying to recreate from a webpage we used to use but on a winform they now want to use, this shows 1 product however if datagridview2 has multiple entries then this would show multiple lines..etc
I have no idea how to go about this or if its even doable.
I'm thinking maybe the form generates a table layout view control with all the columns, adds rows depending on amount of rows from datagridview2 and generates the controls needed in each row for each cell from datagridview2. I may be entirely wrong there, but I'm reaching the end of my knowledge on doing something like this, so here I am to be schooled =)
I created a database in Access and there are some type of records in some tables that requires a particular inserting, so I decided to use VBA to handle this.
The problem is that if i create a form with some controls which i want to refer and use their values as criteria for queries, the form is still a way to insert data. So the query works but the data i inserted are added directly from the form too, creating duplicates.
The question is, is there a way to create a form that has controls only for text input but does nothing to record , leaving inserting, deleting , updating all to queries in VBA?
I tried to put "no" on propriety "add records" in the form but it gets totally blank with no controls.
Your form must be unbound, i.e. its RecordSource must be empty.
Your form can be bound or not bound to a table / query.
This means that the controls on your form may be bound to a field of that table / query.
But you can also have controls in the same form which are not bound.
Example:
You can make a form in which the body has a list view of the records of the table. In this section the controls would be bound to a field.
In the header of the table instead you may have controls that are not bound and that could be used either to filter the records shown or to add new records. You may want to add records this way rather than let users insert data directly in order to add checks or do any other kind of processing before actually adding the data in a new record.
I have a temporary table that is created from a series of query with a VBA code. The name and number of fields in the table changes with the results of the queries.
Right now I simply open the table with DoCmd.OpenTable.
What I would like to do is display the table in a form so I can include some buttons for example to allow the user to export the table.
I tried a listbox but the formatting was not good and I can't add horizontal scroll bar to see all fields.
I tried a subform populated from the table, but it would not adapt to the changes of the table (fields and numbers).
Any Idea of what can I do next ?
the subform seems to be a good idea. When your table is ready to be shown, you can assign it to a subform object via Me.subFormName.SourceObject = "Table.tableName"
(of cource "subFormName" and "tableName" have to be replaced by the actual names of the subform and the table)
I want to populate a DataGridView Grid in my Form with Data from SQL Query or from some Table form Database. I want to know various possible ways to populate the DataGridView Grid.
Thanks in advance.
There are basically 3 ways to display data in a DataGridView
Create the rows manually in a loop: it's very inefficient if you have a lot of data
Use the DataGridView's virtual mode: the DGV only creates as many rows as can be displayed, and
dynamically changes their contents when the user scrolls. You need
to handle the CellValueNeeded event to provide the required data to
the DGV
Use databinding: that's by far the easiest way. You just fill a
DataTable with the data from the database using a DbDataAdapter, and
you assign this DataTable to the DGV's DataSource property. The DGV
can automatically create the columns (AutoGenerateColumns = true),
or you can create them manually (you must set the DataPropertyName
of the column to the name of the field you want to display). In
databound mode, the DGV works like in virtual mode except that it
takes care of fetching the data from the datasource, so you don't
have anything to do. It's very efficient even for a large number of
rows
Link.
I have a table adapter and it is querying the database base on table id. The result of the query i want to show in textboxes. How can do do that? Some help please.
basically iterate through the Rows of the table then pick the individual cells of each row you want to assign to the textboxes.
A much easier method to display the data, is through the DataGridView, which can bind to the table and show the data automatically.