Generate question paper PDF based on GridView row TextBox value in ASP.Net

Hi smile,

Please refer below sample.

HTML

<asp:GridView ID="gvQuestionBank" runat="server" AutoGenerateColumns="false">
    <Columns>
        <asp:TemplateField HeaderText="QuestionCategory">
            <ItemTemplate>
                <asp:HiddenField ID="hfValue" Value='<%#Eval("QType") %>' runat="server" />
                <asp:Label ID="lblCategory" Text='<%#Eval("QuestionCategory") %>' runat="server" />
            </ItemTemplate>
        </asp:TemplateField>
        <asp:TemplateField HeaderText="No Of Question">
            <ItemTemplate>
                <asp:TextBox ID="txtNo" runat="server"></asp:TextBox>
            </ItemTemplate>
        </asp:TemplateField>
    </Columns>
</asp:GridView>
<asp:Button ID="btnGenerate" OnClick="Generate" Text="Generate" runat="server" />

Namespaces

C#

using System.Data;
using iTextSharp.text;
using iTextSharp.text.pdf;
using System.IO;
using System.Linq;

Code

C#

protected void Page_Load(object sender, EventArgs e)
{
    if (!this.IsPostBack)
    {
        DataTable dt = new DataTable();
        dt.Columns.AddRange(new DataColumn[] {  
            new DataColumn("QuestionCategory", typeof(string)), 
            new DataColumn("QType", typeof(int))});
        dt.Rows.Add("Multiple Choices", 1);
        dt.Rows.Add("Fill Blanks", 2);
        gvQuestionBank.DataSource = dt;
        gvQuestionBank.DataBind();
    }
}

private static DataTable GetQuestions()
{
    DataTable dt = new DataTable();
    dt.Columns.AddRange(new DataColumn[] { 
            new DataColumn("QType", typeof(int)), 
            new DataColumn("Question", typeof(string)), 
            new DataColumn("OptionA", typeof(string)), 
            new DataColumn("OptionB", typeof(string)), 
            new DataColumn("OptionC", typeof(string)), 
            new DataColumn("OptionD", typeof(string)), 
            new DataColumn("Answer", typeof(string)) });
    dt.Rows.Add(1, "Computer Word is taken from the word", "Compute", "Calculation", "Component", "Compare", "");
    dt.Rows.Add(1, "A Computer is an", "Mechanical", "Electronic", "Chemical", "Biological", "");
    dt.Rows.Add(1, "Data is a Collection of raw", "Facts and Figures", "Information", "a & b", "None", "");
    dt.Rows.Add(2, "Fill Blanks 1", "a", "b", "c", "d", "b");
    dt.Rows.Add(2, "Fill Blanks 2", "a", "b", "c", "d", "a");
    dt.Rows.Add(2, "Fill Blanks 3", "a", "b", "c", "d", "c");
    return dt;
}

protected void Generate(object sender, EventArgs e)
{
    Document document = new Document(PageSize.A4, 88f, 88f, 10f, 10f);
    using (MemoryStream memoryStream = new MemoryStream())
    {
        PdfWriter writer = PdfWriter.GetInstance(document, memoryStream);
        document.Open();
        DataTable dt1 = GetQuestions();
        for (int i = 0; i < gvQuestionBank.Rows.Count; i++)
        {
            string questionType = (gvQuestionBank.Rows[i].Cells[0].FindControl("hfValue") as HiddenField).Value;
            int noOfQuestion = Convert.ToInt32((gvQuestionBank.Rows[i].Cells[1].FindControl("txtNo") as TextBox).Text);
            string qCategory = (gvQuestionBank.Rows[i].FindControl("lblCategory") as Label).Text;
            var dr = dt1.Select("QType=" + questionType).Take(noOfQuestion).ToList();
            if (qCategory == "Multiple Choices")
            {
                document.Add(new Paragraph("Q" + (i + 1) + ": Choose suitable answer from Multiple Choice Question"));
            }
            else if (qCategory == "Fill Blanks")
            {
                document.Add(new Paragraph("Q" + (i + 1) + ": Fill Blanks given following"));
            }
            if (noOfQuestion > 0)
            {
                for (int j = 0; j < dr.Count; j++)
                {

                    string question = dr[j]["Question"].ToString();
                    string OptionA = dr[j]["OptionA"].ToString();
                    string OptionB = dr[j]["OptionB"].ToString();
                    string OptionC = dr[j]["OptionC"].ToString();
                    string OptionD = dr[j]["OptionD"].ToString();

                    OptionA = !string.IsNullOrEmpty(OptionA) ? "    A)" + OptionA : "";
                    OptionB = !string.IsNullOrEmpty(OptionB) ? "    B)" + OptionB : "";
                    OptionC = !string.IsNullOrEmpty(OptionC) ? "    C)" + OptionC : "";
                    OptionD = !string.IsNullOrEmpty(OptionD) ? "    D)" + OptionD : "";
                    if (dr[0][0].ToString() == "1")
                    {
                        document.Add(new Paragraph((j + 1) + "." + question + "_______     ", new Font(Font.FontFamily.TIMES_ROMAN, 8)));
                        document.Add(new Paragraph(OptionA + OptionB + OptionC + OptionD, new Font(Font.FontFamily.TIMES_ROMAN, 8)));
                    }
                    else if (dr[0][0].ToString() == "2")
                    {
                        document.Add(new Paragraph((j + 1) + "." + question + "_______     ", new Font(Font.FontFamily.TIMES_ROMAN, 8)));
                        document.Add(new Paragraph(OptionA + OptionB + OptionC + OptionD, new Font(Font.FontFamily.TIMES_ROMAN, 8)));
                    }
                }
                document.Add(new Paragraph(" "));
            }
        }

        document.Add(new Paragraph(" "));
        document.Close();
        byte[] bytes = memoryStream.ToArray();
        memoryStream.Close();
        Response.Clear();
        Response.ContentType = "application/pdf";
        Response.AddHeader("Content-Disposition", "attachment; filename=Employee.pdf");
        Response.ContentType = "application/pdf";
        Response.Buffer = true;
        Response.Cache.SetCacheability(HttpCacheability.NoCache);
        Response.BinaryWrite(bytes);
        Response.End();
        Response.Close();
    }
}

Screenshot