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包含vb.net文本框显示的词条
小程序:扫一扫查出行
【扫一扫了解最新限行尾号】
复制小程序
【扫一扫了解最新限行尾号】
复制小程序
新手求教 VB.NET怎么实现这个 在另一个文本框里显示鼠标选中的字符
使用MouseCaptureChanged事件,如:
Private Sub TextBox1_MouseCaptureChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles TextBox1.MouseCaptureChanged
TextBox2.Text = TextBox1.SelectedText
End Sub
vb.net 如何实现文本框1隐藏和显示通过文本框2内容控制?
vb.net文本框显示你这个引号里到底是vb.net文本框显示:“TRUE”还是 “TURE” 啊 ?
Private Sub TextBox2_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles TextBox2.TextChanged
If UCase(TextBox2.Text) = "TRUE" Then
TextBox1.Visible = True
Else
TextBox1.Visible = False
End If
End Sub
VB.NET多个文本框显示多行数据
Dim mycon As New SqlConnection(connstrs)
Dim sqlStr As String = "SELECT * FROM [Column] FROM [Table]"
Dim cmd As New SqlCommand(sqlStr, mycon)
Dim reader = cmd.ExecuteReader()
Dim i As Integer = 1
While reader.Read()
Dim txt As New TextBox()
txt.Name = "txt" + i
txt.Size = New Size(100, 20) '文本框大小
txt.Location = New Point(50, i * 20 + 20)'left:50 top:随便写的vb.net文本框显示,自己看着调
txt.Text = reader.GetValue(0).ToString()
Me.Controls.Add(txt) 'Me 可以改为vb.net文本框显示你要添加上去的对象
End While
'未经过运行,自己调试看看能否OK
VB.NET怎样打开text文件并显示到文本框里
文本框通常用来显示文本字符,以下是用
VB
编写的打开某
txt
文件,并把文件内容显示在文本框的步骤及代码:
1、添加必要的组件(文本框、按钮)
2、设置属性:
3、编写按钮的响应代码:
vb.net使用打开对话框,打开一个文本文件显示在文本框中,然后对文本框中的信息进行编辑后
读文件内容到TextBox :
Try
Using sr As StreamReader = New StreamReader("C:\\TestFile.txt")
textbox1.Text = sr.ReadToEnd()
End Using
Catch E As Exception
Console.WriteLine(E.Message)
End Try
修改完成后,保存到文件:
Using sw As StreamWriter = New StreamWriter("C:\\TestFile.txt")
sw.Write(textbox1.Text)
sw.Close()
End Using
其中,流构造vb.net文本框显示的参数
New StreamReader("C:\\TestFile.txt")
New StreamWriter("C:\\TestFile.txt")
中vb.net文本框显示的"C:\\TestFile.txt"可以用OpenFileDialog和SaveFileDialogvb.net文本框显示的FileName属性替换.
Dim openFileDialog1 As New OpenFileDialog()
openFileDialog1.InitialDirectory = "c:\"
openFileDialog1.Filter = "txt files (*.txt)|*.txt|All files (*.*)|*.*"
openFileDialog1.FilterIndex = 2
openFileDialog1.RestoreDirectory = True
If openFileDialog1.ShowDialog() = System.Windows.Forms.DialogResult.OK Then
Try
Using sr As StreamReader = New StreamReader(openFileDialog1.FileName)
textbox1.Text = sr.ReadToEnd()
End Using
Catch E As Exception
Console.WriteLine(E.Message)
End Try
End If
保存的时候换成SaveFileDialog就好
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