如何用c＃代码创建新的组合框？

-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); 

    }

现在我需要创建combobox_value_changed事件。如何用c＃代码创建新的组合框？

请帮帮我。（对不起英文）

来源

2016-04-29 hayal.et

可以正常访问。例如，如果你想让这个确切的方法处理'item.SelectedIndexChanged'，你所要做的就是'item.SelectedIndexChanged + = comboBox1_SelectedIndexChanged;' – AntiTcb

如果这是ASP.NET，则像这样创建的控件将会是页面发布到服务器时丢失。 – niksofteng

让DynamicCombobox_SelectedIndexChanged成为您想要调用新创建的组合框的选择索引更改的方法。那么你可以用下面的代码分配给该组合框：

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

来源

2016-04-29 11:07:02

你可以试试下面的内容：

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 
}

来源

2016-04-29 13:56:23 MaKCbIMKo

如何用c＃代码创建新的组合框？

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