Bindingsource endedit not updating dataset

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NET uses the term data source as a synonym for a typed Data Set with a predefined, persistent database connection. NET data source is similar to using VB6's Data Environment Designer to specify an OLE DB data provider from one or more tables.

Unlike the Data Environment Designer, multi-table Data Sets don't have the hierarchical structure that the OLE DB Shape provider creates for display in VB6's Hierarchical Flex Grid control.

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The Binding Source class is used to simplify data binding as well as various operations on records. Select the appropriate Text Box and go to the properties and set the text property.

It has different methods like Add New( ), Move First( ), Move Previous( ), Move Next( ), etc which provide easier way for adding new row, moving to first record, moving to previous record, moving to next record and many other operations without writing code for them. Like, I am binding the textbox to show roll_no from the database.

Step 3 : Go to the property window of the binding Source control.

Here, the database name is "STUDENT" and the database table is "STUDENT_DETAIL" which has some records. Now we will perform an operation using methods of the Binding Source class. In the sam manner, click "Previous" to go to the previous record, click "Next" to go to the next record, "First" button to the first record and "Last" button to go to the last record.Step 1 : Go to Toolbox and select binding Source by double-clicking it or draging it. You can save the changes to the current record as well as cancel the changes.Step 2 : It will be visible at the bottom of the form. The part of the schema that defines the elements for the table fields grows from 30 to 94 lines because element definitions now contain max Length attribute values and use restriction Base attributes to specify XSD data types. The section "Create a Complete Data Entry Form in One Step," later in this chapter, includes code to save the schema for the Northwind Customers Data Set. Changes you make to the Data Grid View don't propagate to the table until you click the Save Data button. Delete the Data Grid View control, display the Data Sources window, open the dropdown list for the Data Table, and select Details, as shown in Figure 1-13.You can't open the saved schema in the project's Schema Designer. To make editing easier, you can automate increasing the column widths to match the content by setting the Data Grid View's Auto Size Columns Mode property value to All Cells or Displayed Cells, which adds a horizontal scrollbar to the control. Figure 1-13 Drag the Data Table icon to the form to automatically add a column of labels with associated data-bound Controls -- text boxes for this example -- to the form.

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