Hi chandra226,

Check this sample. now take its reference.

I have created this sample using below article.

Display (Show) GridView data in RDLC report in ASP.Net using C# and VB.Net

HTML

<asp:GridView ID="gvCustomers" runat="server" AutoGenerateColumns="false">
    <Columns>
        <asp:BoundField DataField="CustomerID" HeaderText="ID" />
        <asp:BoundField DataField="ContactName" HeaderText="Name" />
        <asp:BoundField DataField="City" HeaderText="City" />
        <asp:BoundField DataField="Country" HeaderText="Country" />
        <asp:TemplateField>
            <ItemTemplate>
                <asp:Button ID="btnPDF" Text="Generate PDF" runat="server" OnClick="GeneratePDF" />
            </ItemTemplate>
        </asp:TemplateField>
    </Columns>
</asp:GridView>

Namespaces

C#

using System.Configuration;
using System.Data;
using System.Data.SqlClient;
using Microsoft.Reporting.WebForms;

VB.Net

Imports System.Configuration
Imports System.Data
Imports System.Data.SqlClient
Imports Microsoft.Reporting.WebForms

Code

C#

protected void Page_Load(object sender, EventArgs e)
{
    if (!this.IsPostBack)
    {
        DataSet ds = GetData("SELECT TOP 10 CustomerID,ContactName,City,Country FROM Customers");
        this.gvCustomers.DataSource = ds;
        this.gvCustomers.DataBind();
    }
}

protected void GeneratePDF(object sender, EventArgs e)
{
    GridViewRow row = ((sender as Button).NamingContainer as GridViewRow);
    string customerID = row.Cells[0].Text;
    ReportViewer reportViewer1 = new ReportViewer();
    reportViewer1.ProcessingMode = ProcessingMode.Local;
    reportViewer1.LocalReport.ReportPath = Server.MapPath("~/Report.rdlc");

    string conString = ConfigurationManager.ConnectionStrings["NORTHWINDConnectionString"].ConnectionString;
    SqlCommand cmd = new SqlCommand("SELECT TOP 10 CustomerID,ContactName,City,Country FROM Customers WHERE CustomerID = '" + customerID + "'");
    using (SqlConnection con = new SqlConnection(conString))
    {
        using (SqlDataAdapter sda = new SqlDataAdapter())
        {
            cmd.Connection = con;

            sda.SelectCommand = cmd;
            using (Customers dsCustomers = new Customers())
            {
                sda.Fill(dsCustomers, "Customers");
                ReportDataSource datasource = new ReportDataSource("Customers", dsCustomers.Tables["Customers"]);
                reportViewer1.LocalReport.DataSources.Clear();
                reportViewer1.LocalReport.DataSources.Add(datasource);
                Warning[] warnings;
                string[] streamIds;
                string contentType;
                string encoding;
                string extension;
                string format = "PDF";
                byte[] bytes = reportViewer1.LocalReport.Render(format, null, out contentType, out encoding, out extension, out streamIds, out warnings);
                Response.Clear();
                Response.Buffer = true;
                Response.Charset = "";
                Response.Cache.SetCacheability(HttpCacheability.NoCache);
                Response.ContentType = contentType;
                Response.AppendHeader("Content-Disposition", "attachment; filename=RDLC." + extension);
                Response.BinaryWrite(bytes);
                Response.Flush();
                Response.End();
            }
        }
    }       
}

private DataSet GetData(string query)
{
    string conString = ConfigurationManager.ConnectionStrings["NORTHWINDConnectionString"].ConnectionString;
    SqlCommand cmd = new SqlCommand(query);
    using (SqlConnection con = new SqlConnection(conString))
    {
        using (SqlDataAdapter sda = new SqlDataAdapter())
        {
            cmd.Connection = con;

            sda.SelectCommand = cmd;
            using (DataSet dsCustomers = new DataSet())
            {
                sda.Fill(dsCustomers, "Customers");
                return dsCustomers;
            }
        }
    }
}

VB.Net

    Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs) Handles Me.Load
        If Not Me.IsPostBack Then
            Dim ds As DataSet = GetData("SELECT TOP 10 CustomerID,ContactName,City,Country FROM Customers")
            Me.gvCustomers.DataSource = ds
            Me.gvCustomers.DataBind()
        End If
    End Sub

    Protected Sub GeneratePDF(ByVal sender As Object, ByVal e As EventArgs)
        Dim row As GridViewRow = (TryCast((TryCast(sender, Button)).NamingContainer, GridViewRow))
        Dim customerID As String = row.Cells(0).Text
        Dim reportViewer1 As ReportViewer = New ReportViewer()
        reportViewer1.ProcessingMode = ProcessingMode.Local
        reportViewer1.LocalReport.ReportPath = Server.MapPath("~/Report.rdlc")
        Dim conString As String = ConfigurationManager.ConnectionStrings("NORTHWINDConnectionString").ConnectionString
        Dim cmd As SqlCommand = New SqlCommand("SELECT TOP 10 CustomerID,ContactName,City,Country FROM Customers WHERE CustomerID = '" & customerID & "'")
        Using con As SqlConnection = New SqlConnection(conString)
            Using sda As SqlDataAdapter = New SqlDataAdapter()
                cmd.Connection = con
                sda.SelectCommand = cmd
                Using dsCustomers As Customers = New Customers()
                    sda.Fill(dsCustomers, "Customers")
                    Dim datasource As ReportDataSource = New ReportDataSource("Customers", dsCustomers.Tables("Customers"))
                    reportViewer1.LocalReport.DataSources.Clear()
                    reportViewer1.LocalReport.DataSources.Add(datasource)
                    Dim warnings As Warning()
                    Dim streamIds As String()
                    Dim contentType As String
                    Dim encoding As String
                    Dim extension As String
                    Dim format As String = "PDF"
                    Dim bytes As Byte() = reportViewer1.LocalReport.Render(format, Nothing, contentType, encoding, extension, streamIds, warnings)
                    Response.Clear()
                    Response.Buffer = True
                    Response.Charset = ""
                    Response.Cache.SetCacheability(HttpCacheability.NoCache)
                    Response.ContentType = contentType
                    Response.AppendHeader("Content-Disposition", "attachment; filename=RDLC." & extension)
                    Response.BinaryWrite(bytes)
                    Response.Flush()
                    Response.[End]()
                End Using
            End Using
        End Using
    End Sub

    Private Function GetData(ByVal query As String) As DataSet
        Dim conString As String = ConfigurationManager.ConnectionStrings("NORTHWINDConnectionString").ConnectionString
        Dim cmd As SqlCommand = New SqlCommand(query)
        Using con As SqlConnection = New SqlConnection(conString)
            Using sda As SqlDataAdapter = New SqlDataAdapter()
                cmd.Connection = con
                sda.SelectCommand = cmd
                Using dsCustomers As DataSet = New DataSet()
                    sda.Fill(dsCustomers, "Customers")
                    Return dsCustomers
                End Using
            End Using
        End Using
    End Function

Screenshot