VGridControlBase.GetPrev(BaseRow) Method

Returns the row previous to the specified one.

Namespace : DevExpress.XtraVerticalGrid

Assembly : DevExpress.XtraVerticalGrid.v25.2.dll

NuGet Packages : DevExpress.Win.Navigation, DevExpress.Win.VerticalGrid

Declaration

• C#
• VB.NET

public BaseRow GetPrev(
    BaseRow row
)

Public Function GetPrev(
    row As BaseRow
) As BaseRow

Parameters

A BaseRow descendant that represents the row whose previous row is returned.

|

Returns

A BaseRow descendant that represents the row previous to the specified one.

|

Remarks

The GetPrev method gets the row previous to the specified one. This can be especially useful when rows are arranged in a tree structure. The GetPrev method returns the null reference in the instances listed below:

• the row specified as the parameter is the null reference or belongs to another vertical grid;
• the row specified as the parameter is the first row.

Example

The following sample code demonstrates how to make visible all hidden category rows. The VGridControlBase.GetPrev and VGridControlBase.GetLast methods are used to traverse through the rows.

• C#
• VB.NET

private void HideAllCategoryRows(){
   BaseRow row = vGridControl1.GetLast();
   while (row != null){
      if ((row is CategoryRow) && (row.Visible == false)){
         row.Visible = true;
      }
      row = vGridControl1.GetPrev(row);
   }
}

Private Sub HideAllCategoryRows()
   Dim row As BaseRow = VGridControl1.GetLast()
   While Not row Is Nothing
      If TypeOf row Is CategoryRow And row.Visible = False Then
         row.Visible = True
      End If
      row = VGridControl1.GetPrev(row)
   End While
End Sub

See Also

GetFirst()

GetNext(BaseRow)

GetLast()

Cells

VGridControlBase Class

VGridControlBase Members

DevExpress.XtraVerticalGrid Namespace