从另一个表单向 TabControl 添加选项卡 [英] Add tabs to TabControl from another form

问题描述

这让我很害怕，如果可能的话，我很乐意提供帮助.

This is freaking me out, and if this is possible I would gladly appreciate the help.

我是 C# 开发人员，但必须在 VB.NET 中执行此操作.

I am a C# developer but have to do this in VB.NET.

所以 C# 答案也被接受.

So C# answers accepted as well.

• 我在表单上有一个选项卡控件.此控件中还没有任何选项卡.

• I have a tab control on a form. This control does not have any tabs in it yet.

当表单加载时，它会加载一个开始"页面.它添加选项卡tbpStart"并将表单加载到选项卡页frmStart".

When the form loads, it loads a "Start" page. It adds the tab "tbpStart" and loads a form onto the tab page "frmStart".

在这个起始页上，我有很多单选按钮.当我单击一个单选按钮时，它应该在主窗体上加载其他选项卡.

On this start page, I have many Radio Buttons. When I click on one radio button, it should load other tabs on the main form.

问题是如何从另一个表单向一个表单的选项卡控件添加选项卡?

The problem is how can I add tabs to one form's tab control from another form?

代码:

当主表单加载时:

Try
    'Load the Start Tab
    Dim start As New frmTabStart
    AddTabPage("Start", start)
Catch ex As Exception
    PMComponentLibrary.PMMessageBox.ShowErrorMessage("Error occurred while trying to load the from.", ex)
End Try

主窗体上的函数:

Public Sub AddTabPage(tabPageName As String, myForm As System.Windows.Forms.Form)
    Try
        myForm.TopLevel = False
        myForm.Dock = DockStyle.Fill
        myForm.FormBorderStyle = System.Windows.Forms.FormBorderStyle.None

        Dim NewTab As New System.Windows.Forms.TabPage
        NewTab.Name = "tab" + tabPageName
        NewTab.Text = tabPageName
        NewTab.Controls.Add(myForm)
        tbcMain.TabPages.Add(NewTab)
        myForm.Show()
    Catch ex As Exception
        Throw ex
    End Try
End Sub

当我单击开始表单"上的一个单选按钮时，它会在 click_event 上执行此操作:

When I click on one Radio Button on "Start Form" it executes this on a click_event:

If sender Is rdbWIPPostings Then

    entity = New frmTabEntity()
    mainForm.AddTabPage("Step 1", entity)
    Application.DoEvents()
    dte = New frmTabDate()
    mainForm.AddTabPage("Step 2", dte)

    wipSelect = New frmTabWIPSelect()
    mainForm.AddTabPage("Step 3", wipSelect)

    finish = New frmTabFinish()
    mainForm.AddTabPage("Finish", finish)

End If

但是选项卡没有添加到主表单中.我做错了什么?

But the tabs does not get added to the Main Form. What am I doing wrong?

推荐答案

修改 frmTabStart 的构造函数以接收 mainForm 的实例，如下所示:

Modify the constructor for frmTabStart to receive an instance of mainForm like this:

public frmTabStart(MainForm mainForm)
{
    // store that in a field
}

然后当你需要添加标签时:

and then when you need to add the tab:

_mainForm.AddTabPage(...);

这篇关于从另一个表单向 TabControl 添加选项卡的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！