如何在vb.net中对gridview值进行排序? [英] How to sort the gridview values in vb.net?

问题描述

大家好，
如何在vb.net中对gridview值进行排序.我选择的sorting属性为true.但它不起作用.在我的GridView临时值r中.
我正在使用下面的代码读取文件夹并在gridview中显示该值工作正常.现在我想根据文件创建日期对该值进行排序.
请尽快回复.

代码是:

Hi All,
How to sort the gridview values in vb.net .I selected sorting property is true.But it is not working.In my GridView temporary values r there.
I''m using below code for reading folder and display that values in gridview it is working fine.Now i want to sort that values based on file creation date.
Please reply asap.

Code is:

Dim dir As New DirectoryInfo("E:\Sample")
        GridView1.DataSource = dir.GetFiles()
        GridView1.DataBind()

谢谢与问候
Hari

Thanks&Regards
Hari

推荐答案

您是否曾尝试在提出该问题之前先用Google对其进行搜索?这是一个非常基本的问题，您可以在Google上找到各种帮助.当我用Google搜索时出现的主要结果之一是GridView类的MSDN:

MSDN GridView类 [ MSDN GridView.Sort方法 [ ^ ]

它包含有关如何使其工作的代码示例.

Did you try to google this question before asking it? This is a very basic question and you can find all kinds of help for it on google. One of the main results that came up when I googled was the MSDN for the GridView class:

MSDN GridView Class[^]

I looked through the methods and found one called Sort:
MSDN GridView.Sort Method[^]

It includes code samples of how to get it to work.

Protected Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Click
       Dim objFSO = Server.CreateObject("Scripting.FileSystemObject")
       Dim objFolder = objFSO.GetFolder("E:\Sample")
       Dim dt As New DataTable
       Dim FileName As DataColumn = New DataColumn("File Name")
       FileName.DataType = System.Type.GetType("System.String")
       Dim DateModified As DataColumn = New DataColumn("Date Modified")
       DateModified.DataType = System.Type.GetType("System.DateTime")
       dt.Columns.Add(FileName)
       dt.Columns.Add(DateModified)
       Dim objFile
       For Each objFile In objFolder.Files
           Dim dr As DataRow
           dr = dt.NewRow()
           dr.Item("File Name") = objFile.Name
           dr.Item("Date Modified") = objFile.DateLastModified
           dt.Rows.Add(dr)
       Next
       Dim dv As DataView
       dv = New DataView
       dv = dt.DefaultView
       dv.Sort = "Date Modified"
       GridView1.DataSource = dt
       GridView1.DataBind()
       objFolder = Nothing
       objFSO = Nothing
       GridView1.Visible = True
       Button1.Visible = False
       Button2.Visible = True
   End Sub

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