Syntax

Public Sub ClearListItems()

Description

This method is used to clear all items in list view.

Sample

Dim colvalues as System.Collections.Generic.List(Of VTLGeneral.VTLControls.ListViewcolumn)
Dim colvalue as VTLGeneral.VTLControls.ListViewcolumn
Dim lst as VTLGeneral.VTLControls.VTLListView
Dim frm as VTLGeneral.VTLForm
Dim itemvalues as New System.Collections.Generic.List(Of VTLGeneral.VTLControls.ListViewItem)
Dim itemvalue as VTLGeneral.VTLControls.ListViewItem

 Public Sub main()

 lst= New VTLGeneral.VTLControls.VTLListView("lst1") 
frm= New VTLGeneral.VTLForm("frm1")
frm.AddVTLControl(lst)
lst.Height = "2000"
lst.width = "2000"

 Dim btn as VTLGeneral.VTLControls.CChartObjectButton

 btn = New VTLGeneral.VTLControls.CChartObjectButton("btn1")

 frm.AddVTLControl(btn)

 btn.caption = "Clear"

 colvalues = New System.Collections.Generic.List(Of VTLGeneral.VTLControls.ListViewcolumn)

 colvalue = New VTLGeneral.VTLControls.ListViewcolumn
colvalue.Text = "Col1"
colvalue.Key = "Col1"
colvalue.Index = cstr(1)
colvalues.add(colvalue)

 lst.AddHeader(colvalues)
colvalues.clear()

 colvalues = New System.Collections.Generic.List(Of VTLGeneral.VTLControls.ListViewcolumn)
colvalue = New VTLGeneral.VTLControls.ListViewcolumn
colvalue.Text = "Col2"
colvalue.Key = "Col2"
colvalue.Index = cstr(2)
colvalues.add(colvalue)

 lst.AddHeader(colvalues)
colvalues.clear()

 frm.show()

 itemvalue = New VTLGeneral.VTLControls.ListViewItem
itemvalue.Text = "Data"
itemvalue.Key = "S" 
itemvalue.Index = CSTR(1)
itemvalue.AddSubItem("info1")

 itemvalues.add(itemvalue)

 lst.AddListItem(itemvalues)

 End Sub

Public Sub frm1_btn1_click()

lst.ClearListItems()

 End Sub​

See Also

• RemoveItemByIndex
• RemoveItemByKey
• ListViewcolumn

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