[英]WinForms User Control has ComboBox that causes ToolStripDropDown to auto-close
[英]Winforms ComboBox User Control Binding
我有一個從Combobox控件繼承的用戶控件。 我想將數據綁定到用戶控件的構造函數中。 但是,當我將其添加到表單並運行項目時,它會顯示重復的項目。
當我將控件添加到Winform時,它在表單的Designer文件中添加項,而當我運行項目時,它又再次添加到用戶控件的構造函數中。
public partial class CheckSeriesBox : ComboBox
{
private static List<string> CheckSeries;
public CheckSeriesBox()
{
InitializeComponent();
CheckSeries = new List<string>();
SetCheckSeries();
this.Items.AddRange(CheckSeries.ToArray());
this.SelectedIndex = 0;
}
public static List<string> SetCheckSeries()
{
CheckSeries.Add("A");
CheckSeries.Add("B");
}
}
public partial class CheckSeriesBox : ComboBox
{
private static List<string> CheckSeries;
public CheckSeriesBox()
{
InitializeComponent();
CheckSeries = new List<string>();
SetCheckSeries();
if (DesignMode)
{
this.Items.AddRange(CheckSeries.ToArray());
}
}
public static List<string> SetCheckSeries()
{
CheckSeries.Add("A");
CheckSeries.Add("B");
}
protected new bool DesignMode
{
get
{
if (base.DesignMode)
{
return true;
}
else
{
Control parent = this.Parent;
while ((parent != null))
{
System.ComponentModel.ISite site = parent.Site;
if ((site != null) && site.DesignMode)
{
return true;
}
parent = parent.Parent;
}
return false;
}
}
}
}
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