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datagridview datasource not binding when change

My code works fine but when I add data to datagridview it not binding to gridview. I didn't understand. When I search some I find BindingSource.If ı use this I have to change lots of things of my code. are there some shortcuts of binding to datagridview
This is loading datagridview
schoolGridView.DataSource = load.GetDataSource();
And this is when I adding row.
List<DataSourceObject> src = (List < DataSourceObject >)schoolGridView.DataSource;
DataSourceObject dat = new DataSourceObject();
dat.sinif = "asd";
dat.okulAdi = "ad";
dat.ogrenciAdi = "123";
dat.ilce = "43";
dat.il = "123";
src.Add(dat);
schoolGridView.DataSource = src;

Have you ever tried BindingList<> generic class that are simillar to List<> class? BindingList are more suitable for role of DataSource. I belive you can also benefit from methods like GridView.Invalidate(), GridView.Update() and GridView.Refresh(). You can find more information in DataGridView class.

Winform Combobox with DataSource as List<int>

This may be a very simple question but I realized I could not get it work.
I have a Winform combo box with datasource as a List<int>
combo.DataSource = intList;
What do I put for .DisplayMember and .ValueMember in order to simply have a list of integer values? Not setting them will display nothing.
I have worked with other List<myObj> in which DisplayMember and ValueMember are myObj's properties. How about simple data type like int, string?
When retrieving the selected item, one could simply cast (int)(combo.SelectedItem) or have to go through the property corresponding to ValueMember?

The problem does not occur because you have a list of integers, it probably occurs because you add items to the list after assigning it to the .DataSource property. List does not have a mechanism to notify its container when items are added to or removed from it.
Either add items to the list before assigning it to the .DataSource property, or use a wrapper like BindingSource as Krishnraj Rana suggested.

Here BindingSource comes into picture. You can use it like this.
BindingSource bSource = new BindingSource();
bSource.DataSource = new List<int> { 1, 2, 3 };
combo.DataSource = bSource;
Though you can set datasource of combobox directly with list. like this -
combo.DataSource = intList;
This also works perfectly fine.

You can add items from list using foreach like this.
foreach (var v in intList)
{
comboBox1.Items.Add(v.ToString());
}

Binding empty dictionary to a listbox

When i try to bind a dictionary to a listbox I get an ArgumentException. Cannot bind to the new value member.
I use the following code.
Can any one tell me what is wrong. Because when i enter i row in the dictionary its working fine...
this.contactpersonenListBox = new Dictionary<int, string>();
lsContactpersonen.DataSource = new BindingSource(this.contactpersonenListBox, null);
lsContactpersonen.DisplayMember = "Value";
lsContactpersonen.ValueMember = "Key";

It doesn't make a ton of sense to bind an empty dictionary since the dictionary object doesn't report any changes, so adding an item to the dictionary after setting the data source won't show up in the ListBox.
But to get rid of the error, try setting it like this:
BindingSource b = new BindingSource();
b.DataSource = this.contactpersonenListBox;
lsContactpersonen.DisplayMember = "Value";
lsContactpersonen.ValueMember = "Key";
lsContactpersonen.DataSource = b;

Change DataSource in XtraGrid

i have two different Lists.
List<MyClass> list1 = new List<MyClass>();
List<OtherClass> list2 = new List<OtherClass>();
I bind one of them to a xtragrid form devexpress:
gridControl.DataSource = list1;
That works. Now i want to change the list but the columns doesn't change.
Can someone help me?

Call gridView.PopulateColumns().

Binding Listbox to List<object> in WinForms

What's the simplest way to bind a Listbox to a List of objects in Windows Forms?

You're looking for the DataSource property:
List<SomeType> someList = ...;
myListBox.DataSource = someList;
You should also set the DisplayMember property to the name of a property in the object that you want the listbox to display. If you don't, it will call ToString().

Binding a System.Windows.Forms.Listbox Control to a list of objects (here of type dynamic)
List<dynamic> dynList = new List<dynamic>() {
new {Id = 1, Name = "Elevator", Company="Vertical Pop" },
new {Id = 2, Name = "Stairs", Company="Fitness" }
};
listBox.DataSource = dynList;
listBox.DisplayMember = "Name";
listBox.ValueMember = "Id";

Pretending you are displaying a list of customer objects with "customerName" and "customerId" properties:
listBox.DataSource = customerListObject;
listBox.DataTextField = "customerName";
listBox.DataValueField = "customerId";
listBox.DataBind();
Edit: I know this works in asp.net - if you are doing a winforms app, it should be pretty similar (I hope...)

Granted, this isn't going to provide you anything truly meaningful unless the objects have properly overriden ToString() (or you're not really working with a generic list of objects and can bind to specific fields):
List<object> objList = new List<object>();
// Fill the list
someListBox.DataSource = objList;

ListBox1.DataSource = CreateDataSource();
ListBox1.DataTextField = "FieldProperty";
ListBox1.DataValueField = "ValueProperty";
Please refer to this article for detailed examples.

I haven 't seen it here so i post it because for me is the best way in winforms:
List<object> objList = new List<object>();
listBox.DataSource = objList ;
listBox.Refresh();
listBox.Update();

There are two main routes here:
1: listBox1.DataSource = yourList;
Do any manipulation (Add/Delete) to yourList and Rebind.
Set DisplayMember and ValueMember to control what is shown.
2: listBox1.Items.AddRange(yourList.ToArray());
(or use a for-loop to do Items.Add(...))
You can control Display by overloading ToString() of the list objects or by implementing the listBox1.Format event.

For a UWP app:
XAML
<ListBox x:Name="List" DisplayMemberPath="Source" ItemsSource="{x:Bind Results}"/>
C#
public ObservableCollection<Type> Results