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VB.net只能查找一个 vba用find查找多个
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vb.net webbrowser 网页源码中查找某个某个字符串
dim lc as long
lc=InStr(1, WebBrowser1.Document.body.innerhtml, "下载完毕!")
lc大于零的话说明包含,否则说明不包含。
相关问答
Q1: vb.net 搜索子目录下的文件
vb.net编程查找搜索指定目录下面的所有文件和其子目录下的文件,方法如下:
''=============================================
''名称: FindPath
''作用: 查找搜索指定目录下面的所有文件和其子目录下的文件
''参数:strPath 要查找的目录,
''strFiles 用于存查找结果的缓冲区,String 类型的动态数组,调用时事先初始化, 如Redim strFiles(0)
''FileCount 用于返回文件个数
''=============================================
Public Sub FindPath(ByVal strPath As String, strFiles() As String, FileCount As Long)
Dim strDirs() As String
Dim strResult As String
Dim FileLimit As Long
Dim dirLimit As Long
Dim dirCount As Long
Dim I As Long
FileLimit = UBound(strFiles) + 1
dirLimit = 0
If Right$(strPath, 1) "/" Then strPath = strPath "/"
strResult = Dir(strPath, vbDirectory + vbSystem + vbReadOnly + vbHidden + vbNormal + vbArchive)
Do While Len(strResult) 0
If strResult "." And strResult ".." Then
If (GetAttr(strPath strResult) And vbDirectory) vbDirectory Then
If FileCount = FileLimit Then
ReDim Preserve strFiles(FileLimit + 10)
FileLimit = FileLimit + 10
End If
strFiles(FileCount) = strPath strResult
FileCount = FileCount + 1
Else
If dirCount = dirLimit Then
ReDim Preserve strDirs(dirLimit + 10)
dirLimit = dirLimit + 10
End If
strDirs(dirCount) = strPath strResult
dirCount = dirCount + 1
End If
End If
strResult = Dir(, vbDirectory + vbSystem + vbReadOnly + vbHidden + vbNormal + vbArchive)
Loop
For I = 0 To dirCount - 1
Call FindPath(strDirs(I), strFiles, FileCount)
Next I
End Sub
Q2: vb.net 字符串的查找?
dim st as string = "qwertyuiop"
msgbox(st.indexof("p"))
若为-1,则表示不存在
Q3: vb.net 中的字符串搜索、查找功能在哪里
有啊,用正则表达式,下面是简单的例子
Imports System.Text.RegularExpressions
Public Class Form1
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim str As String = "ABCDAEAFAG"
Dim Patter As String = "A"
Dim Matches As MatchCollection = Regex.Matches(str, Patter, RegexOptions.IgnoreCase Or RegexOptions.ExplicitCapture)
For Each ws In Matches
ListBox1.Items.Add("索引位置:" ws.index)
Next
End Sub
End Class
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