Hi adnanali,

I have created sample that full-fill your requirement by refering the below links.

ASP.Net Report Viewer control Tutorial with example

How to filter RDLC Report using Parameter in ASP.Net

HTML

<asp:ScriptManager ID="ScriptManager1" runat="server">
</asp:ScriptManager>
<asp:TextBox runat="server" ID="txtCountry" AutoPostBack="true" OnTextChanged="TextChanged" />
<hr />
<rsweb:ReportViewer ID="ReportViewer1" runat="server" Width="600">
</rsweb:ReportViewer>

C#

protected void Page_Load(object sender, EventArgs e)
{
    if (!IsPostBack)
    {
        Customers dsCustomers = GetData("SELECT TOP 10 CustomerID,ContactName,City,Country FROM Customers");
        ReportViewer1.ProcessingMode = ProcessingMode.Local;
        ReportViewer1.LocalReport.ReportPath = Server.MapPath("~/Report.rdlc");
        BindReport(dsCustomers);
    }
}

private void BindReport(DataSet dsCustomers)
{
    ReportDataSource datasource = new ReportDataSource("Customers", dsCustomers.Tables[0]);
    ReportViewer1.LocalReport.DataSources.Clear();
    ReportViewer1.LocalReport.DataSources.Add(datasource);
}

protected void TextChanged(object sender, EventArgs e)
{
    string country = txtCountry.Text.Trim();
    BindReport(GetFilteredDataSet("Customers_GetCustomersCountryWise", country));
}

private DataSet GetFilteredDataSet(string procedure, string country)
{
    using (SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["constr"].ConnectionString))
    {
        SqlCommand cmd = new SqlCommand();
        if (!string.IsNullOrEmpty(country))
        {
            cmd.Parameters.Add(new SqlParameter("@CountryName", txtCountry.Text.Trim()));
        }
        cmd.Connection = con;
        cmd.CommandText = procedure;
        cmd.CommandType = CommandType.StoredProcedure;
        DataSet ds = new DataSet();
        using (SqlDataAdapter da = new SqlDataAdapter(cmd))
        {
            da.Fill(ds);
        }
        return ds;
    }
}

private Customers GetData(string query)
{
    string conString = ConfigurationManager.ConnectionStrings["constr"].ConnectionString;
    SqlCommand cmd = new SqlCommand(query);
    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, "DataTable1");
                return dsCustomers;
            }
        }
    }
}

VB.Net

Protected Sub Page_Load(sender As Object, e As EventArgs) Handles Me.Load
    If Not IsPostBack Then
        Dim dsCustomers As Customers = GetData("SELECT TOP 10 CustomerID,ContactName,City,Country FROM Customers")
        ReportViewer1.ProcessingMode = ProcessingMode.Local
        ReportViewer1.LocalReport.ReportPath = Server.MapPath("~/Report.rdlc")
        BindReport(dsCustomers)
    End If
End Sub

Private Sub BindReport(dsCustomers As DataSet)
    Dim datasource As New ReportDataSource("Customers", dsCustomers.Tables(0))
    ReportViewer1.LocalReport.DataSources.Clear()
    ReportViewer1.LocalReport.DataSources.Add(datasource)
End Sub

Protected Sub TextChanged(sender As Object, e As EventArgs)
    Dim country As String = txtCountry.Text.Trim()
    BindReport(GetFilteredDataSet("Customers_GetCustomersCountryWise", country))
End Sub

Private Function GetFilteredDataSet(procedure As String, country As String) As DataSet
    Using con As New SqlConnection(ConfigurationManager.ConnectionStrings("constr").ConnectionString)
        Dim cmd As New SqlCommand()
        If Not String.IsNullOrEmpty(country) Then
            cmd.Parameters.Add(New SqlParameter("@CountryName", txtCountry.Text.Trim()))
        End If
        cmd.Connection = con
        cmd.CommandText = procedure
        cmd.CommandType = CommandType.StoredProcedure
        Dim ds As New DataSet()
        Using da As New SqlDataAdapter(cmd)
            da.Fill(ds)
        End Using
        Return ds
    End Using
End Function

Private Function GetData(query As String) As Customers
    Dim conString As String = ConfigurationManager.ConnectionStrings("constr").ConnectionString
    Dim cmd As New SqlCommand(query)
    Using con As New SqlConnection(conString)
        Using sda As New SqlDataAdapter()
            cmd.Connection = con
            sda.SelectCommand = cmd
            Using dsCustomers As New Customers()
                sda.Fill(dsCustomers, "DataTable1")
                Return dsCustomers
            End Using
        End Using
    End Using
End Function

Procedure

--EXEC Customers_GetCustomersCountryWise 'France'
--EXEC Customers_GetCustomersCountryWise
CREATE PROCEDURE [dbo].[Customers_GetCustomersCountryWise]
	@CountryName VARCHAR(15) = NULL
AS
BEGIN
	SET NOCOUNT ON;

	SELECT TOP 10 [CustomerID]
		  ,[ContactName]
		  ,[City]
		  ,[Country]
    FROM  Customers
	WHERE Country = @CountryName OR @CountryName IS NULL
END

Screenshot