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Gets or sets the index of the leftmost visible column in the pane or worksheet.
Use this property to determine or change the current horizontal scroll position of a split pane.
int ScrollColumn { get; set; }
Property ScrollColumn As Integer
worksheet.SplitPanes(2, 2);
IPane pane = worksheet.Panes[0];
pane.ScrollColumn = 3;
int scrollColumn = pane.ScrollColumn;