RichTextBox,突出显示数据库中找不到的所有单词

时间:2018-11-07 08:19:13

标签: database vb.net richtextbox spell-checking

我想设计拼写检查器,我的任务是逐个读取所有单词,如果表中已经存在一个单词,则在数据库表中进行搜索;如果该单词不在数据库中,则不执行任何操作;如果存在,则突出显示该单词。

我已经完成了这个公式,但是我不能理解问题出在哪里,因为它不能完美运行。

Dim lenoftxt As Integer
Dim i As Integer
Dim str As String
Dim tillword As String

tillword = ""
str = ""
i = 1

If Not RichTextBox1.Text = "" Then
    lenoftxt = RichTextBox1.Text.Length
    '   MsgBox(lenoftxt)

    For i = 1 To lenoftxt
        str = Mid(RichTextBox1.Text, i, 1)
        ' MsgBox(str)

        tillword = tillword & str

        If str = " " Then
            i = i + 1
            tillword = Mid(tillword, 1, tillword.Length - 1)
            '  MsgBox(tillword)

            romantranssql = "Select word from approved where word='" & tillword & "'"
            MsgBox(romantranssql)

            pth = My.Application.Info.DirectoryPath
            romantransconn.ConnectionString = "Provider=Microsoft.ace.oledb.12.0; Data Source=" & pth & "\database.mdb; User Id=admin; Password=;"
            romantransda = New OleDbDataAdapter(romantranssql, romantransconn)
            romantransds = New DataSet
            romantransda.Fill(romantransds, "DisplayCenterData")
            romantransdt = romantransds.Tables("DisplayCenterData")
            romantranscmb = New OleDbCommandBuilder(romantransda)

            If Me.BindingContext(romantransdt).Count >= 1 Then
                MsgBox("record found - " & tillword)
                tillword = ""
            End If
            If Me.BindingContext(romantransdt).Count <= 0 Then
                RichTextBox1.Select(i, tillword.Length)
                RichTextBox1.SelectionColor = System.Drawing.Color.Red
                tillword = ""
            End If
        End If
    Next
End If

我正在使用的方法是在tillword字符串中一个接一个地添加字符,如果找到空格,我认为该单词是完整的,然后在数据库表中搜索它。如果找到我什么都不做,如果找不到,我将其突出显示。

1 个答案:

答案 0 :(得分:0)

我从我的php编程中获得了上帝的恩宠解决方案,并且效果很好

var MARK_UNREAD = false;
var ADD_UNSNOOZED_LABEL = false;

function getLabelName(i) {
  return "Snooze/Snooze " + i + " days";
}

function setup() {
  // Create the labels we’ll need for snoozing
  GmailApp.createLabel("Snooze");
  for (var i = 1; i <= 7; ++i) {
    GmailApp.createLabel(getLabelName(i));
  }
  if (ADD_UNSNOOZED_LABEL) {
    GmailApp.createLabel("Unsnoozed");
  }
}

function moveSnoozes() {
  var oldLabel, newLabel, page;
  for (var i = 1; i <= 7; ++i) {
    newLabel = oldLabel;
    oldLabel = GmailApp.getUserLabelByName(getLabelName(i));
    page = null;
    // Get threads in "pages" of 100 at a time
    while(!page || page.length == 100) {
      page = oldLabel.getThreads(0, 100);
      if (page.length > 0) {
        if (newLabel) {
          // Move the threads into "today’s" label
          newLabel.addToThreads(page);
        } else {
          // Unless it’s time to unsnooze it
          GmailApp.moveThreadsToInbox(page);
          if (MARK_UNREAD) {
            GmailApp.markThreadsUnread(page);
          }
          if (ADD_UNSNOOZED_LABEL) {
            GmailApp.getUserLabelByName("Unsnoozed")
              .addToThreads(page);
          }          
        }     
        // Move the threads out of "yesterday’s" label
        oldLabel.removeFromThreads(page);
      }  
    }
  }
}

在您的情况下输入英文字母,而不是sindhi阿拉伯字母 休假

 Dim lenoftxt As Integer
    Dim i As Integer
    Dim str As String
    Dim tillword As String



    tillword = ""
    str = ""

    i = 1

    If Not RichTextBox1.Text = "" Then
        lenoftxt = RichTextBox1.Text.Length
        '   MsgBox(lenoftxt)

        For i = 1 To lenoftxt
            str = Mid(RichTextBox1.Text, i, 1)

            ' MsgBox(str)

            If str = "ا" Or str = "ب" Or str = "ٻ" Or str = "ڀ" Or str = "ت" Or str = "ٿ" Or str = "ٽ" Or str = "ٺ" Or str = "ث" Or str = "پ" Or str = "ج" Or str = "ڄ" Or str = "ڃ" Or str = "چ" Or str = "ڇ" Or str = "ح" Or str = "خ" Or str = "د" Or str = "ڏ" Or str = "ڌ" Or str = "ڊ" Or str = "ڍ" Or str = "ذ" Or str = "ر" Or str = "ڙ" Or str = "ز" Or str = "س" Or str = "ش" Or str = "ص" Or str = "ض" Or str = "ط" Or str = "ظ" Or str = "ع" Or str = "غ" Or str = "ف" Or str = "ڦ" Or str = "ق" Or str = "ڪ" Or str = "ک" Or str = "گ" Or str = "ڳ" Or str = "ڱ" Or str = "ل" Or str = "م" Or str = "ن" Or str = "ڻ" Or str = "و" Or str = "ه" Or str = "ھ" Or str = "ي" Or str = "ئ" Or str = "آ" Or str = "۾" Or str = "۽" Or str = "ِ" Or str = "َ" Or str = "ُ" Or str = "ى" Then



                tillword = tillword & str

            Else



                romantranssql = "Select word from approved where word='" & tillword & "'"

                MsgBox(romantranssql)



                pth = My.Application.Info.DirectoryPath
                romantransconn.ConnectionString = "Provider=Microsoft.ace.oledb.12.0; Data Source=" & pth & "\database.mdb; User Id=admin; Password=;"
                romantransda = New OleDbDataAdapter(romantranssql, romantransconn)
                romantransds = New DataSet
                romantransda.Fill(romantransds, "DisplayCenterData")
                romantransdt = romantransds.Tables("DisplayCenterData")
                romantranscmb = New OleDbCommandBuilder(romantransda)



                If Me.BindingContext(romantransdt).Count >= 1 Then


                    MsgBox("record found - " & tillword)
                    tillword = ""

                End If
                If Me.BindingContext(romantransdt).Count <= 0 Then
                    Dim a As Integer
                    a = tillword.Length + 1


                    RichTextBox1.Select(i - a, tillword.Length)
                    ' MsgBox(RichTextBox1.SelectedText & " selected text, not found and red")
                    RichTextBox1.SelectionColor = System.Drawing.Color.Red
                    MsgBox(RichTextBox1.SelectedText & "-" & i - a & "-" & tillword.Length)



                    ListBox1.Items.Add(tillword)

                    txtnormalword.Text = tillword

                    '    Button5_Click_1(sender, New System.EventArgs())



                    tillword = ""






                End If



            End If
        Next
    End If


    '   tillword = ""