How to Calculate Qty,Tax, Price,Total in c# windows appli.

Jyoti Jodha

9y16.2kVisual Basic .NET

ID Product Name Description Qty Unit Price Tax Total Amount

1 AAA no 4 500 10% ???

2 PP no 12 100 8% ???

Please Solve this Problem

How to do this Query....?????

19 Replies

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Karthi Keyan9y ago
Accepted answer
@Jodha

private void addbutton_Click(object sender, EventArgs e)
{
if (producttxt.Text == "" || qtytxtprice.Text == "" || txtqty.Text == "")
{
MessageBox.Show("Please Provide Details!");
producttxt.Focus();
}
else
{
int Qty = Convert.ToInt32(comboBoxunit.Text);
decimal Unit_Price = Convert.ToDecimal(qtytxtprice.Text);
decimal Tax = Convert.ToDecimal(comboBoxtax.Text);
decimal TotalAmount = (Qty* Unit_Price);
decimal PercentageAmount = ((Unit_Price * Tax) / 100);
TotalAmount = TotalAmount + PercentageAmount;

DataRow dr1 = dt.NewRow();
dr1[0] = producttxt.Text;
dr1[1] = dectxt.Text;
dr1[2] = qtytxtprice.Text;
dr1[3] = txtqty.Text;
dr1[4] = txttax.Text;
dr1[5] = TotalAmount;
dt.Rows.Add(dr1);
dataGridView.DataSource = dt;

}
}

+1
Rajkiran Swain9y ago
1. public void vat()
2. {
3. decimal pri = Convert.ToDecimal(txt_AMT.Text);
4. decimal Vat = Convert.ToDecimal(txt_Vat.Text);
5. decimal stax = Convert.ToDecimal(txt_stax.Text);
6. decimal servicetaxpay = pri * (stax / 100);//only stax
7. decimal totalp = pri + servicetaxpay;//
8. decimal vatpay = pri * (Vat / 100);
9. decimal totalPI = pri + vatpay;
10. decimal totalPIs = pri + servicetaxpay;
11. lblvatAmt.Text = " % " + " =" + vatpay;// ("Vat@" + vatpay);
12. lblstaxamount.Text = " % " + " =" + servicetaxpay;// ("S.Tax@" + servicetaxpay);
13. decimal result1 = vatpay;
14. decimal result2 = servicetaxpay;
15. lblsvtax.Text = (result1 + result2).ToString();
16. txttotalamt.Text = pri+result1+result2 +"Rs.";
17. ////+"stax="+stax+"%"//add
18. ////+ "StaxPay=" + servicetaxpay//add
19. //+ "Stax=" + servicetaxpay
20. //+ " vatpay =" + vatpay
21. //+ "Total(Include Vat Amount) =" + totalPI);
22. }
+2
Karthi Keyan9y ago
find the attachment.
+1
Karthi Keyan9y ago
yes, i accept nitin words. we can give only suggesstions. if you want to learn you want to try yourself hardly. then only you can understand what happen , what you did wrong. there is a lot of fourms here to help you. use that and learn.
+1
Jyoti Jodha9y ago
Main Problem is .....
add button is my this code

private void addbutton_Click(object sender, EventArgs e)
{

if (producttxt.Text == "" || qtytxtprice.Text == "" || txtqty.Text == "")
{
MessageBox.Show("Please Provide Details!");
producttxt.Focus();
return;
}
DataRow dr1 = dt.NewRow();
dr1[0] = producttxt.Text;
dr1[1] = dectxt.Text;
dr1[2] = qtytxtprice.Text;
dr1[3] = txtqty.Text;
dr1[4] = txttax.Text;
dt.Rows.Add(dr1);
dataGridView.DataSource = dt;
//cmd.ExecuteNonQuery();
}
how to add this Queery on this code....?????
+1
Karthi Keyan9y ago
hei goto your design, track the button from tools and put where you want. and double click that button. the code page will open. in that,

private void button1_Click(object sender, EventArgs e)
{
// place your code here. like this.

int Qty = Convert.ToInt32(comboBoxunit.Text);
decimal Unit_Price = Convert.ToDecimal(qtytxtprice.Text);
decimal Tax = Convert.ToDecimal(comboBoxtax.Text);
decimal TotalAmount = (Qty* Unit_Price);
decimal PercentageAmount = ((Unit_Price * Tax) / 100);
TotalAmount = TotalAmount + PercentageAmount;

}

the button click will show like this. put your code in that.
+1
Nitin Sontakke9y ago
Jyoti...this is going to sound too rude to you. However, someone has to do it.

With the kind of question you are asking, you learning while coding. Nothing wrong with that. However, if you do that with the help of forums like this, it is not going to be very helpful to you. We will provide code in bits and pieces and you will implement it and it will work (may be!). But at the end of the day you will not know 'WHY you did it that way?'

My suggestion, whatever technology you have chosen, (Windows Forms, asp.net, asp.net mvc) get a book in complete tutorial is given with code for building a fully working small application. Follow that code, read the book.

It will be faster and (in the end) better for you. Any question(s), please feel free to ask.
+1
Jyoti Jodha9y ago
how to inert this QUEERY.....??

work on add buttion click.....
+1
Karthi Keyan9y ago
hei jodha,

i sent you two part fo codes on that day. 1st part is a correct code. 2nd part is your bug code. in that i notify the error's to you. i don't tell to use that code. ok.

use this code. this is what you need. i had already sent that to you.

int Qty = Convert.ToInt32(comboBoxunit.Text);
decimal Unit_Price = Convert.ToDecimal(qtytxtprice.Text);
decimal Tax = Convert.ToDecimal(comboBoxtax.Text);
decimal TotalAmount = (Qty* Unit_Price);
decimal PercentageAmount = ((Unit_Price * Tax) / 100);
TotalAmount = TotalAmount + PercentageAmount;

+1
Jyoti Jodha9y ago
int Qty = Convert.ToInt32(txtqty.Text); // use combobox.Text to get value.
decimal Unit_Price = Convert.ToDecimal(qtytxtprice.Text);
decimal Tax = Convert.ToDecimal(txttax.Text); // use combobox.Text to get value.
decimal TotalAmount = (txtqty * qtytxtprice); // here u didn't use .Text, then how the value will pass in your field. (int.Parse(comboBoxunit.Text)* int.Parse(qtytxtprice.Text)).ToString;
decimal PercentageAmount = ((qtytxtprice * txttax) / 100); // Same Issue.
TotalAmount = TotalAmount + PercentageAmount;
+1
Karthi Keyan9y ago
send your that part code.
+1
Jyoti Jodha9y ago
Red Line show in this code

decimal TotalAmount = (txtqty * qtytxtprice);

decimal PercentageAmount = ((qtytxtprice * txttax) / 100);

+1
Karthi Keyan9y ago
@jodha,

i modified something in your code. try this.

int Qty = Convert.ToInt32(comboBoxunit.Text);
decimal Unit_Price = Convert.ToDecimal(qtytxtprice.Text);
decimal Tax = Convert.ToDecimal(comboBoxtax.Text);
decimal TotalAmount = (Qty* Unit_Price);
decimal PercentageAmount = ((Unit_Price * Tax) / 100);
TotalAmount = TotalAmount + PercentageAmount;

Bug's in your code.

int Qty = Convert.ToInt32(comboBoxunit.SelectedValue); // use combobox.Text to get value.
decimal Unit_Price = Convert.ToDecimal(qtytxtprice.Text);
decimal Tax = Convert.ToDecimal(comboBoxtax.SelectedValue); // use combobox.Text to get value.
decimal TotalAmount = (comboBoxunit* qtytxtprice); // here u didn't use .Text, then how the value will pass in your field. (int.Parse(comboBoxunit.Text)* int.Parse(qtytxtprice.Text)).ToString;

decimal PercentageAmount = ((qtytxtprice * comboBoxtax) / 100); // Same Issue.
TotalAmount = TotalAmount + PercentageAmount;

+1
Ramesh Palanivel9y ago
Hi Jyothi,
Try this code,
int Qty = Convert.ToInt32(comboBoxunit.SelectedValue);
decimal Unit_Price = Convert.ToDecimal(qtytxtprice.Text);
decimal Tax = Convert.ToDecimal(comboBoxtax.SelectedValue);
decimal TotalAmount = (Qty* Unit_Price);
decimal PercentageAmount = ((Unit_Price * Tax) / 100);
TotalAmount = TotalAmount + PercentageAmount;
+1
Jyoti Jodha9y ago
How to store tha values in variable.....???

int Qty = Convert.ToInt32(comboBoxunit.SelectedValue);
decimal Unit_Price = Convert.ToDecimal(qtytxtprice.Text);
decimal Tax = Convert.ToDecimal(comboBoxtax.SelectedValue);
decimal TotalAmount = (comboBoxunit* qtytxtprice);
decimal PercentageAmount = ((qtytxtprice * comboBoxtax) / 100);
TotalAmount = TotalAmount + PercentageAmount;

+1
Nitin Sontakke9y ago
@Jyoti, when you ask question, please share maximum relevant information.

Carefully read... http://www.c-sharpcorner.com/article/why-wont-you-answer-my-question/
+1
Ramesh Palanivel9y ago
hi jyothi,

store tha values in variable and try..

i think you are trying to perform calculation directly with "*" multiplication... Thats the reason you are getting error.. Kindly share your code.. I will modify and will help you.. Kindly mention your textbox names also...
+1
Jyoti Jodha9y ago
Error Show....

Error 1 Operator '*' cannot be applied to operands of type 'System.Windows.Forms.ComboBox' and 'System.Windows.Forms.TextBox'
+1
Ramesh Palanivel9y ago
Hi Jyothi,

Try this code, how to calculate total amount using c#
int Qty=Convert.toInt32(Qty.text);
deimal unitPrize=convert.ToDecimal(UnitPrize.Text);
decimal Tax=convert.ToDecimal(Tax.text);
decimal TotalAmount=(qty*UnitPrize);
decimal PercentageAmount=((UnitPrize*Tax)/100);
TotalAmount=TotalAmount+PercentageAmount;
+1