Selection index value comboBox

Goran Bibic

Form table partners using
Name , tax number, address
Value In combo is name ,and when select combobox value,tax number and address going automatically.

But for first value in combo box list dont work, for other values from list dont work

Help?

14 Replies

Know the answer? Post it — somebody with the same question will find it here.

Rafnas T P8y ago
Accepted answer
private void comboBoxproduct_SelectedIndexChanged(object sender, EventArgs e)
       {

           try
           {
               con.Open();
               SqlCommand cmd = new SqlCommand("select Description,Rate from Product
   where Product_Name = '" + comboBoxproduct.SelectedItem + "'", con);
               SqlDataReader sdr = cmd.ExecuteReader();
               while (sdr.Read())
               {
                   dectxt.Text = sdr[0].ToString();
                   qtytxtprice.Text = sdr[1].ToString();

               }
               con.Close();
           }
           catch{}

       }
Rafnas T P8y ago
hi,
can you attach your code and send me let me check it
Goran Bibic8y ago
Morning I try code and I have same problem. Once work, once dont work...I dont understabnd
Rafnas T P8y ago
i have posted an example, comboBoxproduct is the combobox and qtytxtprice,dectext are the two textboxes, these text box values are geting from sql using select statement as you can see it is fetched base product name that is in combox item
Goran Bibic8y ago
I now is double clik on combo box but is empty. I need sample code. I have created table in sql and conected imported c# everthing is ok....insert into update work...but problem is when change value in combo box
Rafnas T P8y ago
hi, just double click on your combo box then you can see combobox selectedindex change event. inside that you have to write the code, do you have datatable or how didi you bind combobox items
Goran Bibic8y ago
Windows form app.
I not use code before. Just chek on combobox DataBoundsItem, chose Datasource and datamember

Without code.

Have sample code to I can try?
Rafnas T P8y ago
In combobox selected indexchanged event you have to write the code. Where did you written code before. And what is the code that. Is it windowa form application
Goran Bibic8y ago
combobox Selected index change code...empty..hm....maybe is that solution=?

Some types?

One combo box and two textbox

What is code for combobox Selected index change in this case ? recommendation
Rafnas T P8y ago
Where did you written code for that,is it on combobox selected indexchanged then can you post your combobox selected indexchanged event code.
Goran Bibic8y ago
Rafnas T P

I try on button click...but no...same
Rafnas T P8y ago
hi,
try in page load
combobox.SelectedIndex = -1
Goran Bibic8y ago
I have combo box and two combo boxes.
Cobmo box is Item, textbox are quantity and price.
When change value in combo boxin text box change value. That is ok.
Working for all value, but for first value in combo box not...Why?
Rafnas T P8y ago
hi,
we did not understand your qustion, can you please describe your question properlly