DataTable dt=new DataTable();
BindingSource bindingSource = new BindingSource();
dt.Columns.Add(new DataColumn("Cost",typeof(double)));
this.c1NumericEdit1.DataBindings.Add("Value", bindingSource, "Cost", true, DataSourceUpdateMode.OnValidation);
MessageBox.Show(this.c1NumericEdit1.Enabled.ToString());
数据源无数据时,控件无法获得焦点
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