Data Binding Overview
RadTagCloud supports binding to all ASP.NET 2.0/3.5 DataSource components, including:
AccessDataSource
SqlDataSource
XmlDataSource
ObjectDataSource
SiteMapDataSource
LinqDataSource
EntityDataSource
To bind to a DataSource component, you need to set the following properties:
DataSourceID property of the tagCloud to the ID of the DataSource component
DataTextField property to the field of the DataSource component that provides the text content.
DataNavigteUrlField property to the field of the DataSource component that provides the URL (NavigateUrl) content.
DataWeightField property to the field of the DataSource component that provides the weight content.
Here is an example that shows how to bind the tagCloud to an ObjectDataSource. In asimilar way the control can be bound to any of the above mentioned DataSource components.
<div>
<telerik:RadTagCloud RenderMode="Lightweight" ID="RadTagCloud2" runat="server" Width="400px" MaxFontSize="50px"
Sorting="AlphabeticAsc" DataSourceID="ObjectDataSource1" DataTextField="Text"
DataWeightField="Weight" DataNavigateUrlField="NavigateUrl">
</telerik:RadTagCloud>
<asp:ObjectDataSource ID="ObjectDataSource1" runat="server" SelectMethod="GetSiteData"
TypeName="TagCloudDataItem"></asp:ObjectDataSource>
</div>
/// <summary>
/// This class is only for demonstration purposes. The class used in this example resides in the App_Code folder
/// </summary>
public class TagCloudDataItem
{
private string _text;
private string _navigateUrl;
private double _weight;
public string Text
{
get { return _text; }
set { _text = value; }
}
public string NavigateUrl
{
get { return _navigateUrl; }
set { _navigateUrl = value; }
}
public double Weight
{
get { return _weight; }
set { _weight = value; }
}
public TagCloudDataItem(string text, string navigateUrl, double weight)
{
_text = text;
_navigateUrl = navigateUrl;
_weight = weight;
}
public static List<TagCloudDataItem> GetSiteData()
{
List<TagCloudDataItem> siteData = new List<TagCloudDataItem>();
siteData.Add(new TagCloudDataItem("Russia", "https://en.wikipedia.org/wiki/Russia", 141.9));
siteData.Add(new TagCloudDataItem("Nigeria", "https://en.wikipedia.org/wiki/Nigeria", 154.7));
siteData.Add(new TagCloudDataItem("Saudi Arabia", "https://en.wikipedia.org/wiki/Saudi_Arabia", 28.6));
siteData.Add(new TagCloudDataItem("Canada", "https://en.wikipedia.org/wiki/Canada", 34.1));
siteData.Add(new TagCloudDataItem("USA", "https://en.wikipedia.org/wiki/USA", 309.4));
siteData.Add(new TagCloudDataItem("Sweden", "https://en.wikipedia.org/wiki/Sweden", 9.3));
siteData.Add(new TagCloudDataItem("Germany", "https://en.wikipedia.org/wiki/Germany", 81.7));
siteData.Add(new TagCloudDataItem("Turkey", "https://en.wikipedia.org/wiki/Turkey", 72.5));
siteData.Add(new TagCloudDataItem("Japan", "https://en.wikipedia.org/wiki/Japan", 127.3));
siteData.Add(new TagCloudDataItem("France", "https://en.wikipedia.org/wiki/France", 65.4));
return siteData;
}
}
''' <summary>
''' This class is only for demonstration purposes. The class used in this example resides in the App_Code folder
''' </summary>
Public Class TagCloudDataItem
Private _text As String
Private _navigateUrl As String
Private _weight As Double
Public Property Text() As String
Get
Return _text
End Get
Set(ByVal value As String)
_text = value
End Set
End Property
Public Property NavigateUrl() As String
Get
Return _navigateUrl
End Get
Set(ByVal value As String)
_navigateUrl = value
End Set
End Property
Public Property Weight() As Double
Get
Return _weight
End Get
Set(ByVal value As Double)
_weight = value
End Set
End Property
Public Sub New(ByVal text As String, ByVal navigateUrl As String, ByVal weight As Double)
_text = text
_navigateUrl = navigateUrl
_weight = weight
End Sub
Public Shared Function GetSiteData() As List(Of TagCloudDataItem)
Dim siteData As New List(Of TagCloudDataItem)()
siteData.Add(New TagCloudDataItem("Russia", "https://en.wikipedia.org/wiki/Russia", 141.9))
siteData.Add(New TagCloudDataItem("Nigeria", "https://en.wikipedia.org/wiki/Nigeria", 154.7))
siteData.Add(New TagCloudDataItem("Saudi Arabia", "https://en.wikipedia.org/wiki/Saudi_Arabia", 28.6))
siteData.Add(New TagCloudDataItem("Canada", "https://en.wikipedia.org/wiki/Canada", 34.1))
siteData.Add(New TagCloudDataItem("USA", "https://en.wikipedia.org/wiki/USA", 309.4))
siteData.Add(New TagCloudDataItem("Sweden", "https://en.wikipedia.org/wiki/Sweden", 9.3))
siteData.Add(New TagCloudDataItem("Germany", "https://en.wikipedia.org/wiki/Germany", 81.7))
siteData.Add(New TagCloudDataItem("Turkey", "https://en.wikipedia.org/wiki/Turkey", 72.5))
siteData.Add(New TagCloudDataItem("Japan", "https://en.wikipedia.org/wiki/Japan", 127.3))
siteData.Add(New TagCloudDataItem("France", "https://en.wikipedia.org/wiki/France", 65.4))
Return siteData
End Function
End Class