如何用c＃代碼創建新的組合框？

-2

private void comboBox1_SelectedIndexChanged(object sender, EventArgs e) 
    { 

     ComboBox item = new ComboBox(); 

     item.Name = "subCat"; 
     item.Location = new System.Drawing.Point(100, 71); 
     item.Width = 200; 
     item.Height = 21; 
     item.Text = "Choose SubCategori"; 

     item.Items.Add("test1"); 

     this.Controls.Add(item); 

    }

現在我需要創建combobox_value_changed事件。如何用c＃代碼創建新的組合框？

請幫幫我。（對不起英文）

來源

2016-04-29 hayal.et

可以正常訪問。例如，如果你想讓這個確切的方法處理'item.SelectedIndexChanged'，你所要做的就是'item.SelectedIndexChanged + = comboBox1_SelectedIndexChanged;' – AntiTcb

如果這是ASP.NET，則像這樣創建的控件將會是頁面發佈到服務器時丟失。 – niksofteng

讓DynamicCombobox_SelectedIndexChanged成爲您想要調用新創建的組合框的選擇索引更改的方法。那麼你可以用下面的代碼分配給該組合框：

private void DynamicCombobox_SelectedIndexChanged(object sender, EventArgs e) 
{ 
    //Code here 
} 
// creation statements 
item.SelectedIndexChanged += DynamicCombobox_SelectedIndexChanged;

來源

2016-04-29 11:07:02

你可以試試下面的內容：

private void comboBox1_SelectedIndexChanged(object sender, EventArgs e) 
{ 
    var item = new ComboBox 
    { 
     Name = "subCat", 
     Location = new System.Drawing.Point(100, 71), 
     Width = 200, 
     Height = 21, 
     Text = "Choose SubCategori" 
    }; 
    item.Items.Add("test1"); 

    this.Controls.Add(item); 

    // assign previously written method 
    item.SelectedIndexChanged += DynamicallyCreatedCombobox_SelectedIndexChanged; 
    // or 
    // assign created in place delegate 
    item.SelectedIndexChanged += (objSender, eventArgs) => {/* code here */}; 
} 

// event handler for dynamically created combo box 
private void DynamicallyCreatedCombobox_SelectedIndexChanged(object sender, EventArgs e) 
{ 
    // code here 
}

來源

2016-04-29 13:56:23 MaKCbIMKo

如何用c＃代碼創建新的組合框？

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