whats the difference between the DataBinding and DataSource properties?

Question

_{Sunday, March 14, 2010 5:10 AM}

hi friend,
DataGridView control has two properties DataSource and DataBinding, what would be their main difference?

thanks

All replies (5)

_{Sunday, March 14, 2010 7:10 AM ✅Answered | 1 vote}

DataSource property is for DataGridView itself and is the data source that the DataGridView is displaying data for.
But DataBindings property comes from Control because DataGridView inherits from Control.
With DataBindings property, you can bind the control properties to a data source. e.g. you can bind it's visibility to a boolean field of a record.
However you mention DataBinding which I guess it's a typo mistake because it's not a property, it's an event which will fire when data bounded.My Blog - MSDN Complement By Providing Visual C# Walkthroughs and Sample Codes - Founded In February 24, 2010

_{Sunday, March 14, 2010 7:28 AM ✅Answered}

From msdn

DataGridView. DataSource Property

Gets or sets the data source that the DataGridView is displaying data for.

The DataGridView class supports the standard Windows Forms data-binding model. This means the data source can be of any type that implements one of the following interfaces:

• The IList interface, including one-dimensional arrays.

• The IListSource interface, such as the DataTable and DataSet classes.

• The IBindingList interface, such as the BindingList< T> class.

• The IBindingListView interface, such as the BindingSource class.

Control. DataBindings Property

Gets the data bindings for the control.

Use the DataBindings property to access the ControlBindingsCollection . By adding Binding objects to the collection, you can bind any property of a control to the property of an object.

Thanks, A.m.a.L Dot Net Goodies
Don't hate the hacker, hate the code

_{Sunday, March 14, 2010 7:50 AM ✅Answered}

Yes, its DataBindings.

protected void BindControls()
{
   /* Create two Binding objects for the first two TextBox 
   controls. The data-bound property for both controls 
   is the Text property. The data source is a DataSet 
   (ds). The data member is specified by a navigation 
   path in the form : TableName.ColumnName. */
   textBox1.DataBindings.Add(new Binding
   ("Text", ds, "customers.custName"));
   textBox2.DataBindings.Add(new Binding
   ("Text", ds, "customers.custID"));

   /* Bind the DateTimePicker control by adding a new Binding. 
   The data member of the DateTimePicker is specified by a 
   navigation path in the form: TableName.RelationName.ColumnName. */
   DateTimePicker1.DataBindings.Add(new 
   Binding("Value", ds, "customers.CustToOrders.OrderDate"));

   /* Create a new Binding using the DataSet and a 
   navigation path(TableName.RelationName.ColumnName).
   Add event delegates for the Parse and Format events to 
   the Binding object, and add the object to the third 
   TextBox control's BindingsCollection. The delegates 
   must be added before adding the Binding to the 
   collection; otherwise, no formatting occurs until 
   the Current object of the BindingManagerBase for 
   the data source changes. */
   Binding b = new Binding
   ("Text", ds, "customers.custToOrders.OrderAmount");
   b.Parse += new ConvertEventHandler(CurrencyStringToDecimal);
   b.Format += new ConvertEventHandler(DecimalToCurrencyString);
   textBox3.DataBindings.Add(b);

   /*Bind the fourth TextBox to the Value of the 
   DateTimePicker control. This demonstrates how one control
   can be bound to another.*/
   textBox4.DataBindings.Add("Text", DateTimePicker1,"Value");
   BindingManagerBase bmText = this.BindingContext[
   DateTimePicker1];

   /* Print the Type of the BindingManagerBase, which is 
   a PropertyManager because the data source
   returns only a single property value. */
   Console.WriteLine(bmText.GetType().ToString());
   // Print the count of managed objects, which is 1.
   Console.WriteLine(bmText.Count);

   // Get the BindingManagerBase for the Customers table. 
   bmCustomers = this.BindingContext [ds, "Customers"];
   /* Print the Type and count of the BindingManagerBase.
   Because the data source inherits from IBindingList,
   it is a RelatedCurrencyManager (derived from CurrencyManager). */
   Console.WriteLine(bmCustomers.GetType().ToString());
   Console.WriteLine(bmCustomers.Count);

   /* Get the BindingManagerBase for the Orders of the current
   customer using a navigation path: TableName.RelationName. */ 
   bmOrders = this.BindingContext[ds, "customers.CustToOrders"];
}

Thanks, A.m.a.L Dot Net Goodies
Don't hate the hacker, hate the code

_{Sunday, March 14, 2010 7:29 AM}

However you mention DataBinding which I guess it's a typo mistake because it's not a property, it's an event which will fire when data bounded.

it's **DataBindings **:)

thanks

_{Thursday, November 10, 2011 11:45 PM}

Everyone always shows the VB or C# code for Binding textbox data, no one ever shows how to do it on the ASP Master Page.  Could someone please show that process or code?

I am doing a prototype and only want ot have to use the actual programs as a stub and reduce all the typing since the work will be thrown away and redone later.  I know that I used to be able to access DB'd in older versions of ASP without writing all kind of program logic, but it seems that is no longer the case.  If there is a way could someone please give me the information.

Toni