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    <p>This is definitely possible and you'll be able to produce a chart that looks like this: <img src="https://i.stack.imgur.com/Su8Oe.png" alt="enter image description here"></p> <p>The following code will get what you need:</p> <p><strong>ASPX</strong></p> <pre><code> &lt;asp:Chart ID="Chart1" runat="server" Palette="SeaGreen" BackColor="LightGray" Width="654px"&gt; &lt;Series&gt; &lt;/Series&gt; &lt;ChartAreas&gt; &lt;asp:ChartArea Name="ChartArea1" AlignmentOrientation="Horizontal"&gt; &lt;/asp:ChartArea&gt; &lt;/ChartAreas&gt; &lt;/asp:Chart&gt; </code></pre> <p><strong>C#</strong></p> <pre><code> //Build Sample Data DataTable DataTable dt = new DataTable(); DataColumn dc; dc = new DataColumn(); dc.ColumnName = "Name"; dt.Columns.Add(dc); dc = new DataColumn(); dc.ColumnName = "Question"; dt.Columns.Add(dc); dt.Columns.Add("Marks", typeof(int)); string question = "2D"; DataRow dr; dr = dt.NewRow(); dr["Name"] = "Fred"; dr["Question"] = question; dr["Marks"] = 54; dt.Rows.Add(dr); dr = dt.NewRow(); dr["Name"] = "Bill"; dr["Question"] = question; dr["Marks"] = 66; dt.Rows.Add(dr); dr = dt.NewRow(); dr["Name"] = "Rhona"; dr["Question"] = question; dr["Marks"] = 32; dt.Rows.Add(dr); dr = dt.NewRow(); dr["Name"] = "Peter"; dr["Question"] = question; dr["Marks"] = 46; dt.Rows.Add(dr); question = "4D"; dr = dt.NewRow(); dr["Name"] = "Fred"; dr["Question"] = question; dr["Marks"] = 89; dt.Rows.Add(dr); dr = dt.NewRow(); dr["Name"] = "Bill"; dr["Question"] = question; dr["Marks"] = 99; dt.Rows.Add(dr); dr = dt.NewRow(); dr["Name"] = "Rhona"; dr["Question"] = question; dr["Marks"] = 28; dt.Rows.Add(dr); dr = dt.NewRow(); dr["Name"] = "Peter"; dr["Question"] = question; dr["Marks"] = 44; dt.Rows.Add(dr); question = "3D"; dr = dt.NewRow(); dr["Name"] = "Fred"; dr["Question"] = question; dr["Marks"] = 26; dt.Rows.Add(dr); dr = dt.NewRow(); dr["Name"] = "Bill"; dr["Question"] = question; dr["Marks"] = 89; dt.Rows.Add(dr); dr = dt.NewRow(); dr["Name"] = "Rhona"; dr["Question"] = question; dr["Marks"] = 73; dt.Rows.Add(dr); dr = dt.NewRow(); dr["Name"] = "Peter"; dr["Question"] = question; dr["Marks"] = 14; dt.Rows.Add(dr); //Sort the datatable DataView dv = dt.DefaultView; dv.Sort = "Question ASC, Name ASC"; dt = dv.ToTable(); DataTable table = new DataTable(); table.Columns.Add("Question", typeof(string)); foreach (DataRow dr2 in dt.Rows) { //Add user Names to DataTable table if (!table.Columns.Contains(dr2["Name"].ToString())) { table.Columns.Add(dr2["Name"].ToString(), typeof(int)); } //Add empty Question rows to DataTable if (table.AsEnumerable().Where(x =&gt; x.Field&lt;string&gt;("Question") == dr2["Question"].ToString()).Count() == 0) { table.Rows.Add(dr2["Question"].ToString()); } } // Loop through all columns and questions and then calculate the mark for (int i = 1; i &lt; table.Columns.Count;i++ ) { for (int j = 0; j &lt; table.Rows.Count; j++) { string questionName = table.Rows[j][0].ToString(); for (int k = 0; k &lt; dt.Rows.Count; k++) { string userName = table.Columns[i].ColumnName; table.Rows[j][i] = dt.AsEnumerable().Where(x =&gt; x.Field&lt;string&gt;("Name") == userName).Where(y=&gt;y.Field&lt;string&gt;("Question") == questionName).Sum(r =&gt; r.Field&lt;int&gt;("Marks")); } } } Chart1.Series[seriesName].ChartType = SeriesChartType.Bar; //convert datatable to a IEnumerable form var IEtable = (table as System.ComponentModel.IListSource).GetList(); Chart1.DataBindTable(IEtable, "Question"); </code></pre>
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    1. COHow do I do the grouping of data as you told. My data will be dynamic and I will create data table in run time. So data table will be something like I mentioned in my question.
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    2. COI may have not able to explained my data structure well.. Let me try again..There will be same set of data for each user.. For example, Question and Marks fields will be same for every user.So,My data should be, User 1 ---------- Question | Marks 2D | 30 3D | 40 User 2 ------- 2D | 70 3D | 90
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    3. CO@Rishi: I've updated my answer with completely new code. It works with the data as you have it to produce the desired outcome.
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