創建標籤動態地根據CheckedListBox C＃的WinForms的

-1

我有一個checkedListBox在的TabControl創建標籤動態地根據CheckedListBox C＃的WinForms的

我要的是創造一個標籤和的NumericUpDown動態，當用戶選中的項目checkedListBox它將顯示新標籤和NumericUpDown

然後，當它取消選中此項時，numericUpDown將被清除（空）。

結論：由於許多檢查的項目，因爲許多w've創建標籤和NumericUpDowns。

請問我該怎麼做？

來源

2016-09-19 Yosra Chourou

是的，但你到目前爲止嘗試過什麼？你目前的代碼在哪裏？ –

您可以使用「TableLayoutPanel」或「FlowLayoutPanel」創建此類UI，並將控件動態添加到面板。例如，看看[這篇文章]（https://stackoverflow.com/questions/34426888/dynamic-button-creation-placing-them-in-a-predefined-order-using-c-sharp）。但是如果你繼續這種方法，下一步將是如何從數字上下文中讀取值，以及如何知道哪個值與哪個項目等有關。我建議使用數據綁定和'DataGridView'來代替。 –

對於checkedListBox屬性中的每個複選框項目，切換到事件併爲事件CheckStateChanged創建用戶checkBoxName_CheckStateChanged。在sucriber的代碼可以是這樣的：

private void checkBox1_CheckStateChanged(object sender, EventArgs e) 
    { 
     var source = sender as CheckBox; 
     if (source.Checked == true) 
     { 
      this.numericUpDown1.Text = "TextWhenChecked"; 
      this.labelAtTheNumericUpDown.Text = "TextWhenChecked"; 
     } 
     else 
     { 
      this.numericUpDown1.Text = "TextWhenUnchecked"; 
      this.label1.Text = "TextWhenUnchecked"; 
     } 
    }

，只要你想你填寫的字符串。這些只是例子。要一次只檢查一次checkBox，請看這裏：https://stackoverflow.com/a/24693858/6650581。

來源

2016-09-19 16:26:40

您需要做的是手動創建Label和NumericUpDown並通過添加到Controls集合來顯示它。 TableLayoutPanel可以幫助您安排控件而無需手動設置大小和計算位置。這裏是一個例子：

public class MainForm : Form 
{ 
    private CheckedListBox checkedListBox; 
    private TableLayoutPanel tableLayoutPanel; 

    public MainForm() 
    { 
     InitializeComponent(); 

     //Fill checkedListBox and create controls 
     for(int i = 0; i <= 5; i++) 
     { 
      checkedListBox.Items.Add(i.ToString()); 
      Label lbl = new Label() 
      { 
       Name = "lbl" + i, 
       Text = "Label " + i, 
       Visible = false 
      }; 

      NumericUpDown num = new NumericUpDown() 
      { 
       Name = "num" + i, 
       Value = i, 
       Visible = false 
      }; 

      tableLayoutPanel.Controls.Add(lbl, 0, i); 
      tableLayoutPanel.Controls.Add(num, 1, i); 
     } 
    } 

    private void checkedListBox_ItemCheck(object sender, ItemCheckEventArgs e) 
    { 
     if(e.NewValue == CheckState.Checked) 
     { 
      tableLayoutPanel.Controls["lbl" + e.Index].Visible = true; 
      tableLayoutPanel.Controls["num" + e.Index].Visible = true; 
     } 
     else 
     { 
      tableLayoutPanel.Controls["lbl" + e.Index].Visible = false; 
      ((NumericUpDown)tableLayoutPanel.Controls["num" + e.Index]).Value = 0M; 
     } 
    } 

    private void InitializeComponent() 
    { 
     this.checkedListBox = new System.Windows.Forms.CheckedListBox(); 
     this.tableLayoutPanel = new System.Windows.Forms.TableLayoutPanel(); 
     this.SuspendLayout(); 
     // 
     // checkedListBox 
     // 
     this.checkedListBox.Location = new System.Drawing.Point(8, 8); 
     this.checkedListBox.Name = "checkedListBox"; 
     this.checkedListBox.Size = new System.Drawing.Size(200, 100); 
     this.checkedListBox.TabIndex = 1; 
     this.checkedListBox.ItemCheck += new System.Windows.Forms.ItemCheckEventHandler(this.checkedListBox_ItemCheck); 
     // 
     // tableLayoutPanel 
     // 
     this.tableLayoutPanel.AutoScroll = true; 
     this.tableLayoutPanel.ColumnCount = 2; 
     this.tableLayoutPanel.ColumnStyles.Add(new System.Windows.Forms.ColumnStyle(System.Windows.Forms.SizeType.Percent, 50F)); 
     this.tableLayoutPanel.ColumnStyles.Add(new System.Windows.Forms.ColumnStyle(System.Windows.Forms.SizeType.Percent, 50F)); 
     this.tableLayoutPanel.Location = new System.Drawing.Point(8, 112); 
     this.tableLayoutPanel.Name = "tableLayoutPanel"; 
     this.tableLayoutPanel.Size = new System.Drawing.Size(200, 100); 
     this.tableLayoutPanel.TabIndex = 2; 
     // 
     // MainForm 
     // 
     this.ClientSize = new System.Drawing.Size(223, 227); 
     this.Controls.Add(this.tableLayoutPanel); 
     this.Controls.Add(this.checkedListBox); 
     this.Name = "MainForm"; 
     this.ResumeLayout(false); 
    } 
}

來源

2016-09-20 13:17:42

創建標籤動態地根據CheckedListBox C＃的WinForms的

回答

相關問題