the solution to Content Query Web Part (CQWP) : toolpart.
toolpart.cs
public class ContentQueryToolPart : ToolPart
{
private DropDownList ddlMainXslTemplate;
private ContentQuery webPart;
public ContentQueryToolPart()
{
this.Title = "more props";
}
public override void ApplyChanges()
{
webPart.MainXslTemplate = (MainXslTemplateEnum)Enum.Parse(typeof(MainXslTemplateEnum), ddlMainXslTemplate.SelectedItem.Text);
}
protected override void OnInit(EventArgs e)
{
webPart = (ContentQuery)this.ParentToolPane.SelectedWebPart;
base.OnInit(e);
}
protected override void CreateChildControls()
{
Label label = new Label();
label.Text = "main xsl";
this.Controls.Add(label);
ddlMainXslTemplate = new DropDownList();
ddlMainXslTemplate.DataSource = Enum.GetNames(typeof(MainXslTemplateEnum));
ddlMainXslTemplate.DataBind();
if (string.IsNullOrEmpty(webPart.MainXslTemplate.ToString()) == false)
{
ddlMainXslTemplate.SelectedValue = webPart.MainXslTemplate.ToString();
}
this.Controls.Add(ddlMainXslTemplate);
//btw a custom UC can go here
}
protected override void RenderToolPart(System.Web.UI.HtmlTextWriter output)
{
output.AddAttribute(HtmlTextWriterAttribute.Id, "ContentQueryToolPart");
output.RenderBeginTag(HtmlTextWriterTag.Div);
base.RenderToolPart(output);
output.RenderEndTag();
//this is mainly for css
}
}
and in your webpart.cs
[ToolboxItemAttribute(false)]
public class ContentQuery : ContentByQueryWebPart
{
public MainXslTemplateEnum MainXslTemplate { get; set; }
public override ToolPart[] GetToolParts()
{
List<ToolPart> toolParts = new List<ToolPart>();
toolParts.Add(new ContentQueryToolPart());
toolParts.AddRange(base.GetToolParts());
return toolParts.ToArray();
}
}