vb.net中如何将文本字体加粗

Private Sub CheckBox1_CheckedChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles CheckBox1.CheckedChanged Dim b As FontStyle

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If CheckBox1.Checked Then b = FontStyle.Bold Else b = FontStyle.Regular End If TextBox1.Font = New Font(TextBox1.Font.Name, TextBox1.Font.Size, t) End Sub

（*高分寻求*）有关vb.net的字体设置的小小问题。多多指教！先谢谢啦！！

'新建一个VB.NET 项目，把原来所有代码删了，把下面的代码复制贴上去解OK了

Public Class Form1

Inherits System.Windows.Forms.Form

#Region " Windows 窗体设计器生成的代码 "

Public Sub New()

MyBase.New()

'该调用是 Windows 窗体设计器所必需的。

InitializeComponent()

'在 InitializeComponent() 调用之后添加任何初始化

End Sub

'窗体重写 dispose 以清理组件列表。

Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)

If disposing Then

If Not (components Is Nothing) Then

components.Dispose()

End If

End If

MyBase.Dispose(disposing)

End Sub

'Windows 窗体设计器所必需的

Private components As System.ComponentModel.IContainer

'注意: 以下过程是 Windows 窗体设计器所必需的

'可以使用 Windows 窗体设计器修改此过程。

'不要使用代码编辑器修改它。

Friend WithEvents RadioButton1 As System.Windows.Forms.RadioButton

Friend WithEvents RadioButton2 As System.Windows.Forms.RadioButton

Friend WithEvents GroupBox1 As System.Windows.Forms.GroupBox

Friend WithEvents GroupBox2 As System.Windows.Forms.GroupBox

Friend WithEvents RadioButton3 As System.Windows.Forms.RadioButton

Friend WithEvents RadioButton4 As System.Windows.Forms.RadioButton

Friend WithEvents CheckBox1 As System.Windows.Forms.CheckBox

Friend WithEvents CheckBox2 As System.Windows.Forms.CheckBox

Friend WithEvents CheckBox3 As System.Windows.Forms.CheckBox

Friend WithEvents TextBox1 As System.Windows.Forms.TextBox

Friend WithEvents Button1 As System.Windows.Forms.Button

System.Diagnostics.DebuggerStepThrough() Private Sub InitializeComponent()

Me.RadioButton1 = New System.Windows.Forms.RadioButton

Me.RadioButton2 = New System.Windows.Forms.RadioButton

Me.GroupBox1 = New System.Windows.Forms.GroupBox

Me.GroupBox2 = New System.Windows.Forms.GroupBox

Me.RadioButton3 = New System.Windows.Forms.RadioButton

Me.RadioButton4 = New System.Windows.Forms.RadioButton

Me.CheckBox1 = New System.Windows.Forms.CheckBox

Me.CheckBox2 = New System.Windows.Forms.CheckBox

Me.CheckBox3 = New System.Windows.Forms.CheckBox

Me.TextBox1 = New System.Windows.Forms.TextBox

Me.Button1 = New System.Windows.Forms.Button

Me.GroupBox1.SuspendLayout()

Me.GroupBox2.SuspendLayout()

Me.SuspendLayout()

'

'RadioButton1

'

Me.RadioButton1.Location = New System.Drawing.Point(16, 24)

Me.RadioButton1.Name = "RadioButton1"

Me.RadioButton1.Size = New System.Drawing.Size(56, 24)

Me.RadioButton1.TabIndex = 1

Me.RadioButton1.Text = "红色"

'

'RadioButton2

'

Me.RadioButton2.Location = New System.Drawing.Point(72, 24)

Me.RadioButton2.Name = "RadioButton2"

Me.RadioButton2.Size = New System.Drawing.Size(48, 24)

Me.RadioButton2.TabIndex = 2

Me.RadioButton2.Text = "蓝色"

'

'GroupBox1

'

Me.GroupBox1.Controls.Add(Me.RadioButton2)

Me.GroupBox1.Controls.Add(Me.RadioButton1)

Me.GroupBox1.Location = New System.Drawing.Point(16, 144)

Me.GroupBox1.Name = "GroupBox1"

Me.GroupBox1.Size = New System.Drawing.Size(128, 56)

Me.GroupBox1.TabIndex = 5

Me.GroupBox1.TabStop = False

Me.GroupBox1.Text = "颜色"

'

'GroupBox2

'

Me.GroupBox2.Controls.Add(Me.RadioButton3)

Me.GroupBox2.Controls.Add(Me.RadioButton4)

Me.GroupBox2.Location = New System.Drawing.Point(176, 144)

Me.GroupBox2.Name = "GroupBox2"

Me.GroupBox2.Size = New System.Drawing.Size(136, 56)

Me.GroupBox2.TabIndex = 6

Me.GroupBox2.TabStop = False

Me.GroupBox2.Text = "字号"

'

'RadioButton3

'

Me.RadioButton3.Location = New System.Drawing.Point(16, 24)

Me.RadioButton3.Name = "RadioButton3"

Me.RadioButton3.Size = New System.Drawing.Size(56, 24)

Me.RadioButton3.TabIndex = 2

Me.RadioButton3.Text = "30号"

'

'RadioButton4

'

Me.RadioButton4.Location = New System.Drawing.Point(72, 24)

Me.RadioButton4.Name = "RadioButton4"

Me.RadioButton4.Size = New System.Drawing.Size(48, 24)

Me.RadioButton4.TabIndex = 1

Me.RadioButton4.Text = "40号"

'

'CheckBox1

'

Me.CheckBox1.Location = New System.Drawing.Point(32, 208)

Me.CheckBox1.Name = "CheckBox1"

Me.CheckBox1.Size = New System.Drawing.Size(80, 32)

Me.CheckBox1.TabIndex = 7

Me.CheckBox1.Text = "加粗"

'

'CheckBox2

'

Me.CheckBox2.Location = New System.Drawing.Point(120, 208)

Me.CheckBox2.Name = "CheckBox2"

Me.CheckBox2.Size = New System.Drawing.Size(80, 32)

Me.CheckBox2.TabIndex = 8

Me.CheckBox2.Text = "斜体"

'

'CheckBox3

'

Me.CheckBox3.Location = New System.Drawing.Point(200, 208)

Me.CheckBox3.Name = "CheckBox3"

Me.CheckBox3.Size = New System.Drawing.Size(80, 32)

Me.CheckBox3.TabIndex = 9

Me.CheckBox3.Text = "下划线"

'

'TextBox1

'

Me.TextBox1.Font = New System.Drawing.Font("宋体", 9.0!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(134, Byte))

Me.TextBox1.Location = New System.Drawing.Point(8, 16)

Me.TextBox1.Multiline = True

Me.TextBox1.Name = "TextBox1"

Me.TextBox1.ScrollBars = System.Windows.Forms.ScrollBars.Vertical

Me.TextBox1.Size = New System.Drawing.Size(320, 112)

Me.TextBox1.TabIndex = 0

Me.TextBox1.Text = "话说天下大势，分久必合，合久必分。"

'

'Button1

'

Me.Button1.Location = New System.Drawing.Point(88, 256)

Me.Button1.Name = "Button1"

Me.Button1.Size = New System.Drawing.Size(152, 32)

Me.Button1.TabIndex = 10

Me.Button1.Text = "确定"

'

'Form1

'

Me.AutoScaleBaseSize = New System.Drawing.Size(6, 14)

Me.ClientSize = New System.Drawing.Size(336, 310)

Me.Controls.Add(Me.Button1)

Me.Controls.Add(Me.CheckBox3)

Me.Controls.Add(Me.CheckBox2)

Me.Controls.Add(Me.CheckBox1)

Me.Controls.Add(Me.GroupBox2)

Me.Controls.Add(Me.GroupBox1)

Me.Controls.Add(Me.TextBox1)

Me.Name = "Form1"

Me.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen

Me.Text = "Form1"

Me.GroupBox1.ResumeLayout(False)

Me.GroupBox2.ResumeLayout(False)

Me.ResumeLayout(False)

End Sub

#End Region

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click

If Me.RadioButton1.Checked = True Then Me.TextBox1.ForeColor = System.Drawing.Color.Red

If Me.RadioButton2.Checked = True Then Me.TextBox1.ForeColor = System.Drawing.Color.Blue

If Me.RadioButton3.Checked = True Then Me.TextBox1.Font = New Font("宋体", 30)

If Me.RadioButton4.Checked = True Then Me.TextBox1.Font = New Font("宋体", 40)

Dim style As FontStyle = FontStyle.Regular

If Me.CheckBox1.Checked = True Then style = style Or FontStyle.Bold

If Me.CheckBox2.Checked = True Then style = style Or FontStyle.Italic

' If Me.CheckBox1.Checked = True And Me.CheckBox2.Checked = True Then TextBox1.Font = New Font(TextBox1.Font, FontStyle.Bold Or FontStyle.Italic)

If Me.CheckBox3.Checked = True Then style = style Or FontStyle.Underline

Me.TextBox1.Font = New Font(TextBox1.Font, style)

End Sub

End Class

VB.net中代码如何写，当选中文本为粗体时单击按钮变成正常的，反之变为粗体，其它不要变？

vb.net 没用过，不过估计richtextbox控件应该有selbold这个属性

If RT1.SelBold = False Then

RT1.SelBold = True

Else

RT1.SelBold = False

End If

这样就行。如果没有这个属性就不会了

vb将选中文字加粗怎么弄

其实纯粹的文本框是不支持选中文本标粗的，你应该使用richtextbox控件。

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