如何将行添加到TableLayoutPanel的中间

Question

我有一个包含3列和1行的TableLayoutPanel :(删除按钮,用户控件,添加按钮)

我想要添加按钮添加一个类似于上面单击按钮的新行:例如:BEFORE:

1. (删除按钮1,用户控制2,添加按钮1)
2. (删除按钮2,用户控制2,添加按钮2)

点击"添加按钮1"后:

1. (删除按钮1,用户控制2,添加按钮1)
2. (删除按钮3,用户控制3,添加按钮3)
3. (删除按钮2,用户控制2,添加按钮2)

我设法将行添加到tablelayoupanel的末尾,但不添加到中间:它一直搞砸了布局.这是事件处理程序的片段:

void MySecondControl::buttonAdd_Click( System::Object^ sender, System::EventArgs^ e )
{
   int rowIndex = 1 + this->tableLayoutPanel->GetRow((Control^)sender);

   /* Remove button */
   Button^ buttonRemove = gcnew Button();
   buttonRemove->Text = "Remove";
   buttonRemove->Click += gcnew System::EventHandler(this, &MySecondControl::buttonRemove_Click);

   /* Add button */
   Button^ buttonAdd = gcnew Button();
   buttonAdd->Text = "Add";
   buttonAdd->Click += gcnew System::EventHandler(this, &MySecondControl::buttonAdd_Click);

   /*Custom user control */
   MyControl^ myControl = gcnew MyControl();

   /* Add the controls to the Panel. */
   this->tableLayoutPanel->RowCount += 1;
   this->tableLayoutPanel->Controls->Add(buttonRemove, 0, rowIndex);
   this->tableLayoutPanel->Controls->Add(myControl, 1, rowIndex);
   this->tableLayoutPanel->Controls->Add(buttonAdd, 2, rowIndex);
}

这不能正常工作.

难道我做错了什么？有什么建议？

Answer 1

最后找到了一个解决方案:不是将控件添加到直接位置,而是将它们添加到最后,然后使用该SetChildIndex()函数将控件移动到所需位置:

void MySecondControl::buttonAdd_Click( System::Object^ sender, System::EventArgs^ e )
{
   int childIndex = 1 + this->tableLayoutPanel->Controls->GetChildIndex((Control^)sender);

   /* Remove button */
   Button^ buttonRemove = gcnew Button();
   buttonRemove->Text = "Remove";
   buttonRemove->Click += gcnew System::EventHandler(this, &MySecondControl::buttonRemove_Click);

   /* Add button */
   Button^ buttonAdd = gcnew Button();
   buttonAdd->Text = "Add";
   buttonAdd->Click += gcnew System::EventHandler(this, &MySecondControl::buttonAdd_Click);

   /*Custom user control */
   MyControl^ myControl = gcnew MyControl();

   /* Add the controls to the Panel. */
   this->tableLayoutPanel->Controls->Add(buttonRemove);
   this->tableLayoutPanel->Controls->Add(myControl);
   this->tableLayoutPanel->Controls->Add(buttonAdd);

   /* Move the controls to the desired location */
   this->tableLayoutPanel->Controls->SetChildIndex(buttonRemove, childIndex);
   this->tableLayoutPanel->Controls->SetChildIndex(myControl, childIndex + 1);
   this->tableLayoutPanel->Controls->SetChildIndex(buttonAdd, childIndex + 2);
}