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clear & remove list from 2 listboxes

anurag guhe

anurag guhe

Jul 7 2016 10:15 AM
283
hey guys can u tell me i have problem in my windows form application
in my windows form there are 1 combobox , 2 listbox , 1 textbox , 2 button (one is clear & other is remove)
combobox containing service_name which are fetching from sql
listbox1 containing service_name & service_price after selecting service_name from combobox (i.e listbox1 is show in 1 row swiftcar=1000 , in 2nd row hondacity=5000)
listbox2 containing only service_price after selecting service_name from combobox (i.e listbox2 is show in 1 row 1000 , in 2nd row 5000)
textbox show addition of service_price 6000 (i.e. 1000+5000=6000)
now i want that when i am clicking on remove button it can be remove the values from both listbox1 and listbox2 when i am selecting the values from eigther listbox1 or listbox2
& reduced the service_price values from textbox also
and another solution which i want is on clear button when clicking on clear button it can be clear the all values from both listbox1 and listbox2 & textbox will show zero value
following are the my code now plz provide solution for me on remove and clear button
private void Combo_Services_Customer_SelectedIndexChanged(object sender, EventArgs e)
{
SqlConnection con = new SqlConnection("data source=ABC\\MYSQL;initial catalog=saloon;user id=abc\\Anurag;integrated security=sspi");
con.Open();
SqlCommand cmd = new SqlCommand("select Service_Price from Customer_Services where Service_Name='" + Combo_Services_Customer.SelectedItem.ToString() + "'", con);
cmd.Parameters.Add(new SqlParameter("@Customer_Services", Combo_Services_Customer.SelectedItem.ToString()));
SqlDataReader dr = cmd.ExecuteReader();
while (dr.Read())
{
listBox2.Items.Add(Convert.ToString(int.Parse(dr[0].ToString())));
listBox1.Items.Add(string.Format("{0} = {1}", Combo_Services_Customer.SelectedItem, listBox1.Text = Convert.ToString(int.Parse(dr[0].ToString()))));
decimal sum = 0;
for (int i = 0; i < listBox3.Items.Count - 0; i++)
{
sum += Convert.ToDecimal(int.Parse(listBox2.Items[i].ToString()));
}
Txt_Amt_Services_Customer.Text = Convert.ToString(sum);
}
con.Close();
}

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