我有 .xml 文件，我想按名称标题快速搜索。我创建了用于键入名称的按钮搜索和文本框。但总是弹出 "item not found"

Question

Private Sub btnSearch_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnSearch.Click

    search()

End Sub

Private Sub search()
    Dim input As String = txtSearch.Text.Trim
    If input.Length = 0 Then
        Exit Sub
    End If

    Dim xmlFile As XmlReader
    xmlFile = XmlReader.Create("C:\Bison\POS\Memo\memo_index.xml", New XmlReaderSettings())
    Dim ds As New DataSet
    Dim dv As DataView
    ds.ReadXml(xmlFile)

    dv = New DataView(ds.Tables(0))
    dv.Sort = "title"
    Dim dex As Integer = dv.Find("txtHeader.Text")

    If dex = -1 Then
        MsgBox("Item Not Found")
    Else
        MsgBox(dv(dex)("title").ToString() & " '" & input & "%' " & dv(dex)("file").ToString())
        '& dv(index)("Product_Price".txtSearch).ToString())
    End If

样本XML：

<?xml version="1.0" standalone="yes"?>
<NewDataSet> 
  <Table> 
    <title>Memo - Best Customer Service Award (Hari B C ).</title>  
    <file>041115170756.pdf</file>  
    <creation>04/11/2015 5:07:56 PM</creation> 
  </Table>  
  <Table>..</Table> 
</NewDataSet>

Answer 1

您必须在没有 "" 的 DataView 方法 Find 中使用 txtSearch.Text，如下所示：

Dim dex As Integer = dv.Find(txtSearch.Text)

DataView的Find方法，根据指定的排序键值在DataView中查找一行，必须在搜索TextBox中输入正确的名称标题。

它很适合我，您可以在下面查看我的示例：

XML 文件：

<?xml version="1.0" standalone="yes"?>
<NewDataSet> 
  <Table> 
    <title>Memo - Best Customer Service Award (Hari B C ).</title>
    <file>041115170756.pdf</file>  
    <creation>04/11/2015 5:07:56 PM</creation> 
  </Table>  
   <Table> 
    <title>Test</title>  
    <file>041115170756.pdf</file>  
    <creation>04/11/2015 5:07:56 PM</creation> 
  </Table>  
</NewDataSet>

代码：

Private Sub ButtonSearch_Click(sender As Object, e As EventArgs) Handles ButtonSearch.Click
    Dim xmlFile As XmlReader
    xmlFile = XmlReader.Create("C:\Bison\POS\Memo\memo_index.xml", New XmlReaderSettings())
    Dim ds As New DataSet
    Dim dv As DataView
    ds.ReadXml(xmlFile)
    dv = New DataView(ds.Tables(0))
    dv.Sort = "title"
    Dim dex As Integer = dv.Find(txtSearch.Text)
    DataGridView1.DataSource = dv
    If dex = -1 Then
        MsgBox("Item Not Found")
    Else
        MsgBox("Item Found")
    End If
End Sub

测试结果：

我有 .xml 文件，我想按名称标题快速搜索。我创建了用于键入名称的按钮搜索和文本框。但总是弹出 "item not found"

i have .xml file and i want search quickly by name title. i create button search and textbox for type the name. but always popup "item not found"

xml

vb.net

visual-studio-2008