Hi.
Im not sure about if anyone was already reported it, but, when i add some items to RadDropDownList and when i set "Selected" Property to one of them and i accept the changes the "Selected" property is deleted. I'm using Telerik UI For WinForms Q1 2016 SP1.
I solved this issue establishing directly the property in the designer file just like this:
// // radDropDownList2// this.radDropDownList2.DropDownStyle = Telerik.WinControls.RadDropDownStyle.DropDownList;radListDataItem1.Text = "--Seleccione--";radListDataItem1.Selected = true;radListDataItem2.Text = "Masculino";radListDataItem3.Text = "Femenino";this.radDropDownList2.Items.Add(radListDataItem1);this.radDropDownList2.Items.Add(radListDataItem2);this.radDropDownList2.Items.Add(radListDataItem3);this.radDropDownList2.Location = new System.Drawing.Point(115, 356);this.radDropDownList2.Name = "radDropDownList2";this.radDropDownList2.Size = new System.Drawing.Size(125, 20);this.radDropDownList2.TabIndex = 29;