/// <summary>
/// Gets the index of the row positioned at the start of the previous page that is not currently in view of SfTreeGrid.
/// </summary>
/// <returns>
/// The start index of previous page.
/// </returns>
public static int GetPreviousPageIndex(this SfTreeGrid treeGrid)
{
int previousPageIndex = treeGrid.TreeGridPanel.ScrollRows.GetPreviousPage(treeGrid.SelectionController.CurrentCellManager.CurrentRowColumnIndex.RowIndex);
var firstRowIndex = treeGrid.GetFirstDataRowIndex();
previousPageIndex = previousPageIndex < firstRowIndex ? firstRowIndex : previousPageIndex;
return(previousPageIndex);
}
/// <summary>
/// Gets the previous row info at the specified row index of SfTreeGrid.
/// </summary>
/// <param name="TreeGrid">
/// The corresponding TreeGrid to get previous row info.
/// </param>
/// <param name="rowIndex">
/// The corresponding index of row to get previous row info.
/// </param>
/// <returns>
/// Returns the previous row info of specified row index.
/// </returns>
public static TreeGridRowInfo GetPreviousRowInfo(this SfTreeGrid TreeGrid, int rowIndex)
{
if (rowIndex < 0)
{
throw new InvalidOperationException("Negative rowIndex in GetNextRecordEntry");
}
if (rowIndex == TreeGrid.GetFirstDataRowIndex() &&
rowIndex == TreeGrid.SelectionController.CurrentCellManager.CurrentRowColumnIndex.RowIndex)
{
rowIndex = TreeGrid.TreeGridPanel.ScrollRows.GetNextScrollLineIndex(rowIndex);
}
//The Below condition is Checked with while Editing the Record if it gets the View then we have to give the Selection.
if (rowIndex > TreeGrid.GetLastDataRowIndex() || rowIndex < TreeGrid.GetFirstDataRowIndex())
{
return(null);
}
var rowInfo = (TreeGrid.SelectionController as TreeGridBaseSelectionController).GetTreeGridSelectedRow(rowIndex);
return(rowInfo);
}
/// <summary>
/// Gets the index of the row positioned at the end of next page that is not currently in view of SfTreeGrid.
/// </summary>
/// <returns>
/// Returns the end row index of next page.
/// </returns>
public static int GetNextPageIndex(this SfTreeGrid treeGrid)
{
var rowIndex = treeGrid.SelectionController.CurrentCellManager.CurrentRowColumnIndex.RowIndex;
if (rowIndex < treeGrid.GetFirstDataRowIndex())
{
rowIndex = 0;
}
var nextPageIndex = treeGrid.TreeGridPanel.ScrollRows.GetNextPage(rowIndex);
var lastRowIndex = treeGrid.GetLastDataRowIndex();
nextPageIndex = nextPageIndex <= lastRowIndex ? nextPageIndex : lastRowIndex;
return(nextPageIndex);
}
/// <summary>
/// Gets the next row info at the specified row index in SfTreeGrid.
/// </summary>
/// <param name="TreeGrid">
/// The corresponding TreeGrid to get next row info.
/// </param>
/// <param name="rowIndex">
/// The corresponding index of row to get next row info
/// </param>
/// <returns>
/// Returns the next row info of the specified row index.
/// </returns>
public static TreeGridRowInfo GetNextRowInfo(this SfTreeGrid TreeGrid, int rowIndex)
{
if (rowIndex < 0)
{
return(null);
}
if (rowIndex == TreeGrid.GetLastDataRowIndex() &&
rowIndex == TreeGrid.SelectionController.CurrentCellManager.CurrentRowColumnIndex.RowIndex)
{
rowIndex = TreeGrid.TreeGridPanel.ScrollRows.GetPreviousScrollLineIndex(rowIndex);
}
if (rowIndex > TreeGrid.GetLastDataRowIndex() || rowIndex < TreeGrid.GetFirstDataRowIndex())
{
return(null);
}
var rowInfo = (TreeGrid.SelectionController as TreeGridBaseSelectionController).GetTreeGridSelectedRow(rowIndex);
return(rowInfo);
}
