How to Sum all items(Double or Integer) in Listview in VB.NET

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Can anyone help me regarding on how to sum all items in a specific column in listview which is the data type of the column is "DOUBLE or INTEGER"

Please help me ....

Any Help will be appreciated....

Posted 16-May-10 19:40pm

jleonorlane

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kornakar · Answer 1 · 2010-05-16T20:09:00

Something like

VB

For Each col As DataGridViewColumn In dgvMyDataGrid.Columns
    If col.ValueType Is GetType(Integer) OrElse col.ValueType Is GetType(Double) Then
        Dim sum As Double = 0
        For Each row As DataGridViewRow In dgvMyDataGrids.Rows
            'If the column is visible:
            If row.Cells(col.DisplayIndex).Value IsNot Nothing AndAlso Not IsDBNull(row.Cells(col.DisplayIndex).Value) Then
                sum += Convert.ToDouble(row.Cells(col.DisplayIndex).Value)
            End If
        Next row
    End If
Next col

Sandeep Mewara · Answer 2 · 2010-05-16T20:15:00

Go for a loop on listitems, get the value of each list item that you are talking of and do any mathematical permutation you want to on them.

something like:

C#

// This is in C#
double someValue = 0;
foreach(ListItem li in myList.Items)
{
  // play with someValue
  // you need to put validation checks to make sure the value you 
  // are converting is of correct datatype.
  // This is just a sample code
  someValue += Convert.ToDouble(li[2]);
}

How to Sum all items(Double or Integer) in Listview in VB.NET

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