SqlConnection conn = new SqlConnection(ConfigurationManager.ConnectionStrings["cnnFinalProject"].ToString());
SqlCommand cmd = new SqlCommand(@"SELECT c.partID, p.name, p.categoryID, p.price, p.image, p.subCategoryID,
(CASE WHEN categoryID = 1 THEN 'Y' ELSE 'N' END) AS casesYN,
(CASE WHEN categoryID = 3 THEN 'Y' ELSE 'N' END) AS OSYN,
(CASE WHEN categoryID = 7 THEN 'Y' ELSE 'N' END) AS HDDYN,
(CASE WHEN subCategoryID = 1 THEN 'Y' ELSE 'N' END) AS powerYN,
(CASE WHEN subCategoryID = 2 THEN 'Y' ELSE 'N' END) AS processorYN,
(CASE WHEN subCategoryID = 3 THEN 'Y' ELSE 'N' END) AS moboYN,
(CASE WHEN subCategoryID = 4 THEN 'Y' ELSE 'N' END) AS memoryYN,
(CASE WHEN subCategoryID = 5 THEN 'Y' ELSE 'N' END) AS graphicsYN,
(CASE WHEN subCategoryID = 6 THEN 'Y' ELSE 'N' END) AS opticalYN,
(CASE WHEN subCategoryID = 7 THEN 'Y' ELSE 'N' END) AS soundYN
FROM configuration c JOIN parts p ON p.partID = c.partID
WHERE c.customID = @ID", conn);
conn.Open();
SqlDataReader dr = cmd.ExecuteReader();
while (dr.Read())
{
string[] cases = { dr["partID"].ToString() };
}
How can I insert into the cases array only the 'partID's that have 'casesYN' value set to Y, as it is now it would insert every 'partID' in the sql query.
I assumed you don't want to change your SQL query.
Use List<string>
(requires using System.Collections.Generic
) instead of string[]
because it will be easier to add new item into it:
var cases = new List<string>();
while (dr.Read())
{
if(dr["casesYN"].ToString() == "Y")
cases.Add(dr["partID"].ToString());
}
If you really need an array, you can always call ToArray()
method after the loop is finished:
string[] casesArray = cases.ToArray();
But it will require using System.Linq
at the top of your file.
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