SQL Query in C#: How to get product id

Question

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If I were to add more--not just ProductName=@PName--How do you place ProductDimension=@Pdimension in the string query?

Problem: How to get the product id from table where productname = combobox1 selected item and productdimension = combobox2 selected item and productcolor = combobox3 selected item

Please help me fit it in the code below.

C#

string ProductName = cboproductname.SelectedItem.ToString();
           string sql = "SELECT ProductNo FROM RawMat WHERE ProductName=@PName";

           SqlCommand cmd = new SqlCommand(sql, cn);
           cmd.Parameters.AddWithValue("@PName", ProductName);

           SqlDataReader dr = cmd.ExecuteReader();

           while (dr.Read())
           {
               txtproductno.Text = dr["ProductNo"].ToString();
           }

           dr.Close();

Posted 1-Jul-12 4:18am

wolfsor

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Herman<T>.Instance 1-Jul-12 11:12am

what problems do you have?

1 solution

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Shemeer NS · Accepted Answer · 2012-07-01T05:18:00

You can easily add the Product Dimension and Product Color in the query same like the Product Name with the "AND"

string ProductName = cboproductname.SelectedItem.ToString();
string ProductDimension= combobox2.SelectedItem.ToString();
string ProductColor= combobox3.SelectedItem.ToString();
string sql = "SELECT ProductNo FROM RawMat WHERE ProductName=@PName      AND ProductDimension=@PDimension AND ProductColor=@PColor";

SqlCommand cmd = new SqlCommand(sql, cn);
cmd.Parameters.AddWithValue("@PName", ProductDimension);
cmd.Parameters.AddWithValue("@PDimension", ProductColor);
cmd.Parameters.AddWithValue("@PColor", ProductName);
SqlDataReader dr = cmd.ExecuteReader();

while (dr.Read())
{
    txtproductno.Text = dr["ProductNo"].ToString();
}

dr.Close();

Mark it as solution, If it resolved your issue.

http://msdn.microsoft.com/en-us/library/system.data.sqlclient.sqlparameter.aspx[^]