Problem with WHERE columnName = Data in MySQL query in C#
- by Ryan Sullivan
I have a C# webservice on a Windows Server that I am interfacing with on a linux server with PHP. The PHP grabs information from the database and then the page offers a "more information" button which then calls the webservice and passes in the name field of the record as a parameter. So i am using a WHERE statement in my query so I only pull the extra fields for that record. I am getting the error:
System.Data.SqlClient.SqlException:Invalid column name '42'
Where 42 is the value from the name field from the database.
my query is
string selectStr = "SELECT name, castNotes, triviaNotes FROM tableName WHERE name =\"" + show + "\"";
I do not know if it is a problem with my query or something is wrong with the database, but here is the rest of my code for reference.
NOTE: this all works perfectly when I grab all of the records, but I only want to grab the record that I ask my webservice for.
public class ktvService : System.Web.Services.WebService {
[WebMethod]
public string moreInfo(string show) {
string connectionStr = "MyConnectionString";
string selectStr = "SELECT name, castNotes, triviaNotes FROM tableName WHERE name =\"" + show + "\"";
SqlConnection conn = new SqlConnection(connectionStr);
SqlDataAdapter da = new SqlDataAdapter(selectStr, conn);
DataSet ds = new DataSet();
da.Fill(ds, "tableName");
DataTable dt = ds.Tables["tableName"];
DataRow theShow = dt.Rows[0];
string response = "Name: " + theShow["name"].ToString() + "Cast: " + theShow["castNotes"].ToString() + " Trivia: " + theShow["triviaNotes"].ToString();
return response;
}
}
