i want to show price of selected dropdownlist item.

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i made two dropdowns and 1 lable.

1.ddCategory dropdown
2.ddProduct dropdown
3.Price lable

i hvae 3 tables in database. 1st is CategoryData 2nd is ProductData and 3rd is is PriceData

CAtegoryData is databound to ddCategory // (Id,CAtegory_Id,Name)4 categories
ProductData is databound to ddProduct // ((Id,Category_Id,Product_Name)8 Product in each category
Pricedata has price. (Id,Category_Id,Price)

user select category. product are shown of the selected category. and then the price should be displayed on the lable.

i just couldn't display price into the lable.

i guess my select statement is wrong.

code here, please help asap

SqlCommand cmd = new SqlCommand("Select * From PriceData Where Id ='" + ddCategory.SelectedValue + "'", con);

       cmd.Parameters.AddWithValue("@Price", ddProduct.SelectedItem.Value);
       cmd.CommandType = CommandType.Text;

       cmd.Connection = con;
       SqlDataReader sdr = cmd.ExecuteReader();

       if (sdr.Read())
       {

           Price.Text = sdr["Price"].ToString();
       }

Posted 26-Dec-14 6:40am

Member 11336613

Updated 26-Dec-14 6:56am

v2

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ZurdoDev 26-Dec-14 13:39pm

Debug it and find out what is happening.

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Suvendu Shekhar Giri · Answer 1 · 2014-12-26T10:56:00

This should resolve your problem.

C#

SqlCommand cmd = new SqlCommand("Select * From PriceData Where Id =" + ddProduct.SelectedValue.ToString(), con);
        cmd.CommandType = CommandType.Text; 
        cmd.Connection = con;
        string price = cmd.ExecuteScalar();
        
        if (!price.Equals(String.Empty))
        { 
            Price.Text = price;
        }

Assumption:
PriceData table is storing productid in the field Id

In case this doesn't resolve the issue, please let me know !