Creating Dropdown as custom webpart properties

Question

Hi,
I have currently created a custom string (textbox) webpart property.
I would like to add another webpart property which is of dropdown model (enum). However, I am not able to create and associate a default value.
I want to create a enum as below:
public enum _ddlPager { 10, 20, 50,100 }
And also set the default value as 10.
I have already checked:
http://www.ashokraja.me/articles/How-to-create-a-custom-property-and-set-a-default-value-in-a-SharePoint-2013-Visual-WebPart
http://www.learningsharepoint.com/2013/08/22/create-custom-webpart-properties-for-sharepoint-2013-visual-webpart/
But I was not able to add the numbers.
How to create a dropdown for custom webpart property?
Thanks

Answer 1

Hi,
Thanks for the reply.
I have tried like this, but the code has errors:
#region Custom web part property
private propertyPager _ddlpropertyPager ;
public enum propertyPager
_1a = 10,
_2a = 20,
_3a = 50,
_4a = 100
[WebBrowsable(true), Personalizable(PersonalizationScope.Shared)]
public propertyPager propertyPageNumbers
get { return _ddlpropertyPager; }
set { _ddlpropertyPager = value; }
public override EditorPartCollection CreateEditorParts()
ArrayList editorArray = new ArrayList();
CustomProperty edPart = new CustomProperty();
edPart.ID = this.ID + "_editorPart1";
editorArray.Add(edPart);
EditorPartCollection editorParts = new EditorPartCollection(editorArray);
return editorParts;
public void SaveChanges()
this.SetPersonalizationDirty();
//Create a custom EditorPart to edit the WebPart control.
private class CustomProperty : EditorPart
DropDownList _ddlPager;
public CustomProperty()
Title = "Custom Properties";
public override bool ApplyChanges()
SummaryWP part = this.WebPartToEdit as SummaryWP;
part.propertyPageNumbers = ddlPage.SelectedValue.ToString();
part.SaveChanges();
return true;
public override void SyncChanges()
EnsureChildControls();
SummaryWP part = (SummaryWP)WebPartToEdit;
_ddlPager.SelectedValue = part.propertyPageNumbers;
protected override void CreateChildControls()
Controls.Clear();
_ddlPager = new DropDownList();
Controls.Add(_ddlPager);
protected override void RenderContents(HtmlTextWriter writer)
writer.Write("Items Per Page :");
writer.WriteBreak();
_ddlPager.RenderControl(writer);
writer.Write("");
writer.WriteBreak();
writer.Write("--------------------------");
private DropDownList ddlPage
get
EnsureChildControls();
return _ddlPager;
#endregion }}
Getting error in function "Apply Changes" and "Sync Changes"
How to fix this?
Thanks