Filter RDLC Report using ComboBox in Windows Forms in C#

I created a report dealing with expense tracker. I need based on income details report should display.

Now i get the whole report but does not change when i change income details from a common filter option: incomedetails.

when i use salary filter only incomedetails with salary should be displayed.

using Microsoft.Reporting.WinForms;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Data.SqlClient;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace Rdlc_Report
{
    public partial class Form1 : Form
    {
        DataTable dtexpense = new DataTable();
        public Form1()
        {
            
            InitializeComponent();
        }
  
        private void Form1_Load(object sender, EventArgs e)
        {
            Getincomedet();
            // TODO: This line of code loads data into the 'ExpenseTrackerDataSet.ExpenseTable' table. You can move, or remove it, as needed.
            this.ExpenseTableTableAdapter.Fill(this.ExpenseTrackerDataSet.ExpenseTable);

            this.reportViewer1.RefreshReport();
           
            this.reportViewer1.RefreshReport();
        }
        private ExpenseTrackerDataSet GetData(string query)
        {
            SqlCommand cmd = new SqlCommand(query);
            using (SqlConnection con = new SqlConnection("xxx"))
            {
               using (SqlDataAdapter sda = new SqlDataAdapter())
                {
                    cmd.Connection = con;
                    String val = this.ComboBox1.Text;
                    cmd.Parameters.AddWithValue("@IncomeDetails", val);
                    sda.SelectCommand = cmd;

                    using (ExpenseTrackerDataSet dsexp1 = new ExpenseTrackerDataSet())
                    {
                        sda.Fill(dsexp1,"dtexpense");
                        return dsexp1;
                    }

                }
            }
        }

        private void Getincomedet()
        {
            SqlCommand cmd = new SqlCommand("SELECT distinct IncomeDetails FROM ExpenseTable ");
            using (SqlConnection con = new SqlConnection("xxx"))
            {
                using (SqlDataAdapter sda = new SqlDataAdapter())
                {
                    cmd.Connection = con;
                    sda.SelectCommand = cmd;
                    
                    sda.Fill(dtexpense);
                    ComboBox1.DataSource = dtexpense;
                    ComboBox1.DisplayMember = "IncomeDetails";
                    ComboBox1.ValueMember = "IncomeDetails";
                 
                   // comboBox1.Items.Insert(0, new ListItem("Select", ""));
                }
            }
        }
        private void ComboBox1_SelectedIndexChanged(object sender, EventArgs e)
        {
            this.ExpenseTableTableAdapter.Fill(this.ExpenseTrackerDataSet.ExpenseTable);
            if (ComboBox1.SelectedIndex != 0)
            {
                //this.reportViewer1.LocalReport.DataSources.Clear();
                
                ExpenseTrackerDataSet dsexp = GetData("SELECT * FROM ExpenseTable  WHERE IncomeDetails = @IncomeDetails");
                ReportDataSource dsexp1 = new ReportDataSource("Expense", dsexp.Tables[3]);
                //this.reportViewer1.RefreshReport();

                //this.reportViewer1.RefreshReport();
               
                this.reportViewer1.LocalReport.DataSources.Add(dsexp1);
               // this.reportViewer1.RefreshReport();
            }

        }
    }
}

please solve.