Grouping Data in Dataset

Hello all.  I am currently trying to use a repeater but open to other options.  I have a dataset that looks like the following attached code I have a static dataset I am showing here.   I need the data to group by ProjectID and show the Description and then below the records but also by PurchaseType in seperate repeaters or datalist etc. such as:

Title: Oh snap I found a squirrel
Purchase Date   OrderNumber   Amount
03/10/2008        00179               150.00
03/08/2008        00180                 25.00
....
Title: Questions and Answers on Life Insurance
Purchase Date  OrderNumber   Amount
03/06/2008       00182             2010.95
.....

any help on best way to split this up?  I have a repeater but because I have one dataset I am having trouble creating the relation and distinct off projectid.  Not sure it is the best way but need some help.

protected static DataSet MainDataSet()
    {
        DataSet ds;
        System.Data.DataTable dt;
 
        ds = new DataSet();
        dt = new DataTable();
 
        // Columns
        DataColumn ProjectID;
        DataColumn Description;
        DataColumn PurchaseDate;
        DataColumn PurchaseType;
        DataColumn OrderNumber;
        DataColumn Amount;
 
        // Initialize the columns
        ProjectID = new DataColumn("ProjectID");
        Description = new DataColumn("Description");
        PurchaseDate = new DataColumn("PurchaseDate");
        PurchaseType = new DataColumn("PurchaseType");
        OrderNumber = new DataColumn("OrderNumber");
        Amount = new DataColumn("Amount");
 
        // Add columns
        dt.Columns.Add(ProjectID);
        dt.Columns.Add(Description);
        dt.Columns.Add(PurchaseDate);
        dt.Columns.Add(PurchaseType);
        dt.Columns.Add(OrderNumber);
        dt.Columns.Add(Amount);
 
        //Add DataRows to DataTable
        DataRow myRow;
        myRow = dt.NewRow();
        myRow["ProjectID"] = "22";
        myRow["Description"] = "Oh snap I found a squirrel";
        myRow["PurchaseDate"] = "03/10/2008";
        myRow["PurchaseType"] = "Book";
        myRow["OrderNumber"] = "000179";
        myRow["Amount"] = "150.00";
        dt.Rows.Add(myRow);
 
        myRow = dt.NewRow();
        myRow["ProjectID"] = "22";
        myRow["Description"] = "Oh snap I found a squirrel";
        myRow["PurchaseDate"] = "03/08/2008";
        myRow["PurchaseType"] = "Book";
        myRow["OrderNumber"] = "000180";
        myRow["Amount"] = "25.00";
        dt.Rows.Add(myRow);
 
        myRow = dt.NewRow();
        myRow["ProjectID"] = "22";
        myRow["Description"] = "Oh snap I found a squirrel";
        myRow["PurchaseDate"] = "03/07/2008";
        myRow["PurchaseType"] = "Book";
        myRow["OrderNumber"] = "000181";
        myRow["Amount"] = "85.00";
        dt.Rows.Add(myRow);
 
        myRow = dt.NewRow();
        myRow["ProjectID"] = "33";
        myRow["Description"] = "Questions and Answers on Life Insurance";
        myRow["PurchaseDate"] = "03/06/2008";
        myRow["PurchaseType"] = "Book";
        myRow["OrderNumber"] = "000182";
        myRow["Amount"] = "2010.95";
        dt.Rows.Add(myRow);
 
        myRow = dt.NewRow();
        myRow["ProjectID"] = "44";
        myRow["Description"] = "Cover Redesign";
        myRow["PurchaseDate"] = "03/10/2008";
        myRow["PurchaseType"] = "Service";
        myRow["OrderNumber"] = "000183";
        myRow["Amount"] = "55.00";
        dt.Rows.Add(myRow);
 
        myRow = dt.NewRow();
        myRow["ProjectID"] = "44";
        myRow["Description"] = "Cover Redesign";
        myRow["PurchaseDate"] = "03/09/2008";
        myRow["PurchaseType"] = "Service";
        myRow["OrderNumber"] = "000184";
        myRow["Amount"] = "1290.00";
        dt.Rows.Add(myRow);
 
        myRow = dt.NewRow();
        myRow["ProjectID"] = "55";
        myRow["Description"] = "Manuscript Rework";
        myRow["PurchaseDate"] = "03/08/2008";
        myRow["PurchaseType"] = "Service";
        myRow["OrderNumber"] = "000185";
        myRow["Amount"] = "99.00";
        dt.Rows.Add(myRow);
 
        myRow = dt.NewRow();
        myRow["ProjectID"] = "55";
        myRow["Description"] = "Manuscript Rework";
        myRow["PurchaseDate"] = "03/05/2008";
        myRow["PurchaseType"] = "Service";
        myRow["OrderNumber"] = "000186";
        myRow["Amount"] = "65.00";
        dt.Rows.Add(myRow);
 
        ds.Tables.Add(dt);
        return ds;
    }

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