如何使用VB.NET以编程方式在Rich TextBox中添加粗体文本
我有这个代码:
print_text.Text = "Patient number: " + ds.Tables("patients").Rows(0).Item(0) print_text.AppendText(Environment.NewLine) print_text.Text = print_text.Text + "Last name: " + ds.Tables("patients").Rows(0).Item(1) print_text.AppendText(Environment.NewLine)
现在上面的数据我以编程方式添加,并且工作正常。 但是在上面的代码中,我想以粗体字体添加Patient number
和Last name
。
使用RichTextBox
,为什么不使用RTF呢?
例:
Sub Main Dim f = new Form() Dim print_text = new RichTextBox() With {.Dock = DockStyle.Fill} f.Controls.Add(print_text) Dim sb = new System.Text.StringBuilder() sb.Append("{\rtf1\ansi") sb.Append("This number is bold: \b 123\b0 ! Yes, it is...") sb.Append("}") print_text.Rtf = sb.ToString() f.ShowDialog() End Sub
结果:
MSDN
这样,您还可以轻松地将RTF内容包装到扩展方法中:
Module RtfExtensions Public Function ToRtf(s As String) As String Return "{\rtf1\ansi" + s + "}" End Function Public Function ToBold(s As String) As String Return String.Format("\b {0}\b0 ", s) End Function End Module
并使用它
Dim text = "This number is bold: " + "123".ToBold() + "! Yes, it is..." print_text.Rtf = text.ToRtf()
使用RichTextBox.SelectionFont
属性。
请查看这些MSDN链接,了解如何执行此操作: 链接1和链接2
希望能帮助到你。
编辑:
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load Dim len As Integer RichTextBox1.Text = "Patient number: " + " 12345" RichTextBox1.SelectionStart = 0 RichTextBox1.SelectionLength = "Patient number".Length RichTextBox1.SelectionFont = New Font("Arial", 12, FontStyle.Bold) RichTextBox1.SelectionLength = 0 RichTextBox1.AppendText(Environment.NewLine) len = RichTextBox1.Text.Length RichTextBox1.AppendText("Last name: " + " ABCD") RichTextBox1.SelectionStart = len RichTextBox1.SelectionLength = "Last name".Length RichTextBox1.SelectionFont = New Font("Arial", 12, FontStyle.Bold) RichTextBox1.SelectionLength = 0 End Sub