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vb.netrank的简单介绍

作者:小编 更新时间:2023-08-23 13:39:18 浏览量:221人看过

VB.NET中数据的排序问题

建议用 DataGridView(你用的是它吧?)内建的排序方法来排序.介绍和示例代码可以参考MSDN:

VB.NET数组的排序法?

如果你正努力学习vb.net的方法,推荐一个例子如下:

Imports System

Imports System.Collections

Public Class SamplesArray

Public Class myReverserClass

Implements IComparer

' Calls CaseInsensitiveComparer.Compare with the parameters reversed.

Function Compare(x As Object, y As Object) As Integer _

Implements IComparer.Compare

Return New CaseInsensitiveComparer().Compare(y, x)

End Function 'IComparer.Compare

End Class 'myReverserClass

Public Shared Sub Main()

' Creates and initializes a new Array and a new custom comparer.

Dim myArr As [String]() = {"The", "QUICK", "BROWN", "FOX", "jumps", "over", "the", "lazy", "dog"}

Dim myComparer = New myReverserClass()

' Displays the values of the Array.

Console.WriteLine("The Array initially contains the following values:")

PrintIndexAndValues(myArr)

' Sorts a section of the Array using the default comparer.

Console.WriteLine("After sorting a section of the Array using the default comparer:")

' Sorts a section of the Array using the reverse case-insensitive comparer.

Console.WriteLine("After sorting a section of the Array using the reverse case-insensitive comparer:")

' Sorts the entire Array using the default comparer.

Array.Sort(myArr)

Console.WriteLine("After sorting the entire Array using the default comparer:")

' Sorts the entire Array using the reverse case-insensitive comparer.

Array.Sort(myArr, myComparer)

Console.WriteLine("After sorting the entire Array using the reverse case-insensitive comparer:")

End Sub 'Main

Public Shared Sub PrintIndexAndValues(myArr() As [String])

Dim i As Integer

For i = 0 To myArr.Length - 1

Console.WriteLine(" [{0}] : {1}", i, myArr(i))

Next i

Console.WriteLine()

End Sub 'PrintIndexAndValues

End Class 'SamplesArray

'This code produces the following output.

'

'The Array initially contains the following values:

' [0] : The

' [1] : QUICK

'After sorting a section of the Array using the default comparer:

' [1] : BROWN

'After sorting a section of the Array using the reverse case-insensitive comparer:

'After sorting the entire Array using the default comparer:

' [0] : BROWN

' [1] : dog

'After sorting the entire Array using the reverse case-insensitive comparer:

' [0] : the

' [1] : The

VB.NET中DATAGRIDVIEW做排名(要序号)求助!!!

第一种方式:手动设置,设置列允许重新排列,这样在单击datagridview的列名时,就会自动排序

第二种方式:自动排序,想要按那列排序,就设置那列的SortMode的属性为:Programmatic

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