Επεξεργασία

Κοινή χρήση μέσω

BindingSource.Current Property

  • Reference

Definition

Namespace:
System.Windows.Forms
Assembly:
System.Windows.Forms.dll
Source:
BindingSource.cs
Source:
BindingSource.cs
Source:
BindingSource.cs

Gets the current item in the list.

public:
 property System::Object ^ Current { System::Object ^ get(); };
[System.ComponentModel.Browsable(false)]
public object Current { get; }
[System.ComponentModel.Browsable(false)]
public object? Current { get; }
[<System.ComponentModel.Browsable(false)>]
member this.Current : obj
Public ReadOnly Property Current As Object

Property Value

Object

An Object that represents the current item in the underlying list represented by the List property, or null if the list has no items.

Attributes
BrowsableAttribute

Examples

The following code example demonstrates the Current property. To run this example, paste the code into a form and call the PopulateBindingSourceWithFonts method from the form's Load event handling method.

  public BindingSource bindingSource1 = new BindingSource();
  TextBox box1 = new TextBox();

  private void PopulateBindingSourceWithFonts()
  {
      bindingSource1.CurrentChanged += new EventHandler(bindingSource1_CurrentChanged);
      bindingSource1.Add(new Font(FontFamily.Families[2], 8.0F));
      bindingSource1.Add(new Font(FontFamily.Families[4], 9.0F));
      bindingSource1.Add(new Font(FontFamily.Families[6], 10.0F));
      bindingSource1.Add(new Font(FontFamily.Families[8], 11.0F));
      bindingSource1.Add(new Font(FontFamily.Families[10], 12.0F));
      DataGridView view1 = new DataGridView();
      view1.DataSource = bindingSource1;
      view1.AutoGenerateColumns = true;
      view1.Dock = DockStyle.Top;
      this.Controls.Add(view1);
      box1.Dock = DockStyle.Bottom;
      box1.Text = "Sample Text";
      this.Controls.Add(box1);
      box1.DataBindings.Add("Text", bindingSource1, "Name");
      view1.Columns[7].DisplayIndex = 0;
  }

  void bindingSource1_CurrentChanged(object sender, EventArgs e)
  {
      box1.Font = (Font)bindingSource1.Current;
  }

 Private WithEvents bindingSource1 As New BindingSource()
 Private box1 As New TextBox()

 
 Private Sub PopulateBindingSourceWithFonts()
   
     bindingSource1.Add(New Font(FontFamily.Families(2), 8.0F))
     bindingSource1.Add(New Font(FontFamily.Families(4), 9.0F))
     bindingSource1.Add(New Font(FontFamily.Families(6), 10.0F))
     bindingSource1.Add(New Font(FontFamily.Families(8), 11.0F))
     bindingSource1.Add(New Font(FontFamily.Families(10), 12.0F))
     Dim view1 As New DataGridView()
     view1.DataSource = bindingSource1
     view1.AutoGenerateColumns = True
     view1.Dock = DockStyle.Top
     Me.Controls.Add(view1)
     box1.Dock = DockStyle.Bottom
     box1.Text = "Sample Text"
     Me.Controls.Add(box1)
     view1.Columns("Name").DisplayIndex = 0
     box1.DataBindings.Add("Text", bindingSource1, "Name")
     
 End Sub
  
 Sub bindingSource1_CurrentChanged(ByVal sender As Object, ByVal e As EventArgs) _
     Handles bindingSource1.CurrentChanged
     box1.Font = CType(bindingSource1.Current, Font)
 End Sub

Remarks

Use the Current property to access the current item, but use the List property to get the entire list. To determine the type of the current object, use the GetType, or ToString methods.

To change the current item, set the Position property to a new integral value, or use one of the navigation methods such as MoveNext.

Applies to

See also