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Telerik RadTagCloud dynamic databinding...

Posted on 2011-03-07
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Last Modified: 2012-05-11
I have this code to fill the TagCloud control, but I don't know how can I set the NavigateUrl to a field which is not contained in database, something like ("~/Postbackpage.aspx?Make=Audi") ...for each tag there will be a different querystring for the NavigateUrlField.

protected void BindTagCloudToDataTable(RadTagCloud cloud) 
    { 
        SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["SpecsConnectionString"].ConnectionString); 
        SqlDataAdapter adapter = new SqlDataAdapter("SELECT [Make],count(*) AS [Weight] FROM [VehicleSpecs] group by [Make] ORDER BY [Make]", con); 
        DataTable links = new DataTable(); 
        adapter.Fill(links); 
  
        cloud.DataTextField = "Make"; 
        cloud.DataWeightField = "Weight"; 
        cloud.DataNavigateUrlField = "NavigateUrl"; 
        cloud.DataSource = links; 
        cloud.DataBind(); 
    }

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Question by:evo_x
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3 Comments
 
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Expert Comment

by:grossac
ID: 35062063
I haven't use the TagCloud but I would think that you can do something like this:

protected void BindTagCloudToDataTable(RadTagCloud cloud) 
    { 
        SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["SpecsConnectionString"].ConnectionString); 
        SqlDataAdapter adapter = new SqlDataAdapter("SELECT [Make],count(*) AS [Weight] FROM [VehicleSpecs] group by [Make] ORDER BY [Make]", con); 
        DataTable links = new DataTable(); 
        adapter.Fill(links); 
  
        cloud.DataTextField = "Make"; 
        cloud.DataWeightField = "Weight"; 
        cloud.DataNavigateUrlField = "/PostBackPage.aspx?Make=" + "Make"
        cloud.DataSource = links; 
        cloud.DataBind(); 
    } 

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With "Make" being the make text from the data adapter

Just a guess.

http://www.telerik.com/help/aspnet-ajax/tagclouddatabinding.html

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Author Comment

by:evo_x
ID: 35062109
This does not work, I get this error:
DataBinding: 'System.Data.DataRowView' does not contain a property with the name '/PostBackPage'.
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Accepted Solution

by:
grossac earned 2000 total points
ID: 35062334
I didn't test it before, try this...

protected void BindTagCloudToDataTable(RadTagCloud cloud) 
    { 
        SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["SpecsConnectionString"].ConnectionString); 
        SqlDataAdapter adapter = new SqlDataAdapter("SELECT [Make],count(*) AS [Weight] FROM [VehicleSpecs] group by [Make] ORDER BY [Make]", con); 
        DataTable links = new DataTable(); 
        adapter.Fill(links); 
  
        cloud.DataTextField = "Make"; 
        cloud.DataWeightField = "Weight"; 
        cloud.DataSource = links; 
        cloud.DataBind(); 
    } 

            foreach (RadTagCloudItem item in cloud.Items)
            {
                item.NavigateUrl = "/PostBackPage.aspx?Make=" + item.Text;
            }

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