如何在vb.net中的datagridview中的特定列中計算Row值的總和

Question

如何計算特定列中datagridview行內容的總和？

假設這是我的datagridview；

Name      Score
John      35
Helen     34
James     30

Total     99

我想計算“分數”列的總和，將其放在文本框中。

謝謝您的幫助。

Answer 1

像這樣

Dim sumOfScore As Integer = 0
For Each row As DataRow in *yourDataRow*
    Dim score As Integer = CInt(row.Item("Score").ToString())
    sumOfScore += score
Next
txtYourTextBox.Text = sumOfScore.ToString

Answer 2

我也得到了解決我的問題的代碼：

Private Sub GetSUMofUnits()
    Dim total As Integer

    For Each row As DataGridViewRow In dgvSubjectsEnrolled.Rows
        total += row.Cells(4).Value
    Next
    txtUnits.Text = total
End Sub

Answer 3

Imports System.Data.SqlClient
Public Class Form1
    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        Dim connetionString As String
        Dim connection As SqlConnection
        Dim adapter As New SqlDataAdapter
        Dim ds As New DataSet
        Dim i,total As Integer
        total = 0
        connetionString = "Data Source=ServerName;Initial Catalog=DatabaseName;User ID=UserName;Password=Password"
        connection = New SqlConnection(connetionString)
        Try
            connection.Open()
            adapter.SelectCommand = New SqlCommand("SELECT * FROM your_DB_table", connection)
            adapter.Fill(ds)
            connection.Close()
            For i = 0 To ds.Tables(0).Rows.Count - 1
                total = total + ds.Tables(0).Rows(i).Item(1)
            Next
        Catch ex As Exception
            MsgBox(ex.ToString)
        End Try
        textbox1.text = total
    End Sub
End Class

我認為這會對您有所幫助。