问题
I have created three data tables by pulling data from an sql database. DT1, DT2, DT3.
I have added these three tables to a data set, myDS.
I have added relations between these three tables.
I then dragged a DataGridView onto my form and I want to bind the three tables to the DataGridview. So I added my dataset DS to a dataview manager, myDVM. I bound myDVM to a bindingsource, bindingSource1, and made it the data source for the DataGridView.
I am not sure how to bind the tables I want from myDVM / bindingSource1, to appear in the DataGridView.
i want to display the child tables related to the parent table using primary key in the same datagridview!!
thanks in advance!!!
help me plz!!!
回答1:
If by "display the child tables" you mean display related data from child tables, you should SELECT your data into a single table using the appropriate joins. DataGridViews display their data in a single-table format - there is no "multiple table" concept in a DataGridView.
DataSet.Merge() can help you to merge DataRows from separate objects into one.
来源：https://stackoverflow.com/questions/1830761/binding-a-datagridview-to-multiple-tables-in-dataviewmanager-or-dataset