Question

VB.Net中如何把DataGridView中某一列的字段值的最大值放入textbox中？

VB.Net中如何把DataGridView中某一列的字段值的最大值放入textbox中？

Answer 1

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim a(Me.DataGridView1.RowCount - 1) As Integer
For i As Integer = 0 To Me.DataGridView1.RowCount - 1
a(i) = Me.DataGridView1.Rows(i).Cells(1).Value '假设第1列吧
Next
Call Sort(a)
End Sub

Public Sub Sort(ByVal list As Integer())
Dim i As Integer, j As Integer, temp As Integer
Dim done As Boolean = False
j = 1
While (j < list.Length) AndAlso (Not done)
done = True
For i = 0 To list.Length - j - 1
If list(i) > list(i + 1) Then
done = False
temp = list(i)
list(i) = list(i + 1)
list(i + 1) = temp
End If
Next
j += 1
End While
Me.TextBox1.Text = list(Me.DataGridView1.RowCount - 1)
End Sub

Answer 2

是网页吗，网页用JS去实现好一些，尽量将一些可以前台实现的功能放到前台，减少服务器负拜担，如果是WINFROM 那还是用 licj12的方法吧 ，他的不错

Answer 3

DataGridView可以通过rows[i].column[j]获取每个单元格的值，遍历一下去最大的值吧