## DropDownItemCollecti.Add method Adds a string to the end of the collection. ```csharp public int Add(string value) ``` | Parameter | Type | Description | | --- | --- | --- | | value | String | T......"One", "Two", "Three" }; FormField comboBoxField = builder.I...doc.Save(ArtifactsDir + "FormFields.DropDownItemCollecti.html");...