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C# SQL Server stored procedure not returning expected value

I wrote up this function to return a dataset, I was expecting a smaller dataset as there's only one value I was expecting back, but I get a rather bloated object back which I cannot find the value I am looking for, this is causing problems as I intend to use this function heavily.
I was hoping someone could spot what I am doing wrong, I have included the code, a screenshot of the returned object and what I am expecting. Any help would be greatly appreciated.
If I have not phrased anything in this question correctly feel free to let me know, I struggle to express my thoughts well.
public DataSet getPartnerParameter(string parameter)
{
using (var dbConnection = new SqlConnection(UnityHelper.IocContainer.Resolve<IConfigHelperService>().GetConnectionString("CASConnectionString")))
{
dbConnection.Open();
using (var dbCommand = new SqlCommand("GETPARTNERPARAMETER"))
{
dbCommand.CommandType = CommandType.StoredProcedure;
dbCommand.Connection = dbConnection;
SqlParameter lstrParameter = new SqlParameter("#Parameter", SqlDbType.VarChar);
lstrParameter.Value = parameter;
dbCommand.Parameters.Add(lstrParameter);
var ldaDPS = new SqlDataAdapter(dbCommand);
var ldstParameterValues = new DataSet();
ldaDPS.Fill(ldstParameterValues);
return ldstParameterValues;
}
}
}
This is what I am expecting to find
edit//
changed my code slightly but still not working.
public String[] getPartnerParameter(string parameter)
{
using (var dbConnection = new SqlConnection(UnityHelper.IocContainer.Resolve<IConfigHelperService>().GetConnectionString("CASConnectionString")))
{
dbConnection.Open();
SqlCommand dbCommand = new SqlCommand("GETPARTNERPARAMETER", dbConnection);
dbCommand.CommandType = CommandType.StoredProcedure;
SqlParameter lstrParameter = new SqlParameter("#Parameter", SqlDbType.VarChar);
lstrParameter.Value = parameter;
dbCommand.Parameters.Add(lstrParameter);
SqlDataReader reader = dbCommand.ExecuteReader();
string[] results = new string[2];
while (reader.Read())
{
results[0] = reader[0].ToString();
results[1] = reader[1].ToString();
}
if (results.Length < 1)
{
results[0] = "Cannot find Value";
results[1] = "S";
return results;
}
else
{
return results;
}
}
The error is this:
{"Procedure or function 'GETPARTNERPARAMETER' expects parameter '#Parameter', which was not supplied."}

The values you are looking for are probably in the dataSet.Tables[0].Rows[0] row.
However, if you are expecting one row back, a DataSet object seems like overkill. I would recommend avoiding the SqlDataAdapter/DataSet and instead use a SqlDataReader.
Untested code, but should give you the gist of how to use it:
using (SqlConnection connection = new SqlConnection(connectionString))
{
connection.Open();
SqlCommand dbCommand = new SqlCommand("GETPARTNERPARAMETER", connection);
dbCommand.CommandType = CommandType.StoredProcedure;
SqlParameter lstrParameter = new SqlParameter("#Parameter", SqlDbType.VarChar);
lstrParameter.Value = "LexisNexisCreditConsentRequired";
dbCommand.Parameters.Add(lstrParameter);
SqlDataReader reader = dbCommand.ExecuteReader();
while (reader.Read())
{
var yourValue = reader[0];
var yourDataType = reader[1];
}
}

A DataSet is an object which can contain many tables. It doesn't have to, but it can, and so it also has a number of fields, properties, and methods to support that role.
For this query, look at ldstParameterValues.Tables[0].Rows[0]. Within that row, you can also see the columns with another level of bracket-indexing:
DataRow row = ldstParameterValues.Tables[0].Rows[0];
var column0Value row[0];
var column1Value = row[1];
However, the type for these results is object. You'll need to either cast the values or use one of the GetX() methods on the datarow to get results with a meaningful type.

How to use C# connect to mysql and get json data?

As mentioned above:
I'm using C# to connect to a MySQL database and I want to read JSON data type.
I use the method MySqlCommand.ExecuteReader:
using (MySqlConnection sconn = new MySqlConnection(sqlConnectString))
{
sconn.Open();
String sql_Command = #"SELECT `id` FROM orders.jsontest;";
using (MySqlCommand scmd = new MySqlCommand(sql_Command, sconn))
{
**MySqlDataReader sdr = scmd.ExecuteReader();** // fatal error
DataTable datatable = new DataTable();
// ...
}
}
Can it be that I cannot use ExecuteReader here?

I know this question is old, but just in case you do not yet have a solution to your problem or anyone else encounters a similar problem, the following code should work for you:
private IEnumerable<int> GetIds()
{
using (MySqlConnection connection = new MySqlConnection(connectionString))
{
connection.Open();
string commandText = #"SELECT id FROM jsontest"; // Assuming that `orders` is your database, then you do not need to specify it here.
using (MySqlCommand command = new MySqlCommand(commandText, connection))
{
MySqlDataReader reader = command.ExecuteReader();
while (reader.Read())
{
yield return reader.GetInt32(0);
}
}
}
}
Now what you should pay attention to is this line
while (reader.Read())
which fetches results from the jsontest table as long as the MySqlDataReader can still read valid results and this line
yield return reader.GetInt32(0);
which instructs the reader to get and return each record of the fetched table one at a time as an Int32 (int). You need to change this if your tables column type is not INT.
Since you selected just one column (i.e. "SELECT id"), the parameter is 0, because your fetched resul table consists of one column only.
Additionally, in your code you seem to want to get the results as a DataTable; if so, you should use MySqlDataAdapter instead of the MySqlDataReader as follows:
DataTable resultTable = new DataTable("ResultTable");
MySqlDataAdapter adapter = new MySqlDataAdapter(command);
adapter.Fill(table);

Correct your sql command
String sql_Command = #"SELECT id FROM orders.jsontest";

How to populate list or array with values from access database

I am trying to populate a group of labels in a C# windows form with some values that are in a certain attribute (PlayerName) in a database that I have in access.
Currently the only code I have is:
OleDbConnection connection = new OleDbConnection(CONNECTION STRING HERE);
OleDbCommand command = new OleDbCommand();
command.Connection = connection;
command.CommandText = "SELECT PlayerName FROM [TotalPlayerName] WHERE Team = 1 AND SportID = " + Form1.IDNumber;
I need a list or array that holds these values so I can use them to populate the labels, but I am unaware of how to do this.

You need to call ExecuteReader to obtain a data reader and then loop through the rows of the result set like this:
List<string> result = new List<string>();
using (var reader = command.ExecuteReader())
{
while (reader.Read())
{
result.Add(reader.GetString(0));
}
}
Before you do this, don't forget to open the connection like this:
connection.Open();

There are a couple of things here..... for sake of best practice well its more standard practice... as I like to say!
Use USING as this cleans up after connection.. see here for great examples in a "using" block is a SqlConnection closed on return or exception?
using (OdbcDataReader DbReader = DbCommand.ExecuteReader())
{
int fCount = DbReader.FieldCount;
while (DbReader.Read())
{
Label1 = DbReader.GetString(0);
Label2 = DbReader.GetString(1);
Label3 = DbReader.GetString(2);
Label4 = DbReader.GetString(3);
for (int i = 0; i < fCount; i++)
{
String col = DbReader.GetString(i);
Console.Write(col + ":");
}
Console.WriteLine();
}
}
NB your SQL only return 1 field /String at the moment

while reading the data fill the list like
List<string> players = new List<string>();
OleDbDataReader rdr = command.ExecuteReader();
While(rdr.Read())
{
players.Add(rdr["PlayerName"].ToString());
}

You need to create a OleDbReader object to read the response from the query. You will also need to create a List to store the data Something like this:
List<string> playerNameList = new List<string>();
using (OleDbReader r = command.ExecuteReader())
{
while(reader.Read())
{
playerNameList.Add(reader.GetString(0));
}
}

One option might be using OleDbDataAdapter to fill a DataTable those values that returns your query;
var dt = new DataTable();
using(var da = new OleDbDataAdapter(command))
{
da.Fill(dt);
}
And since your query return one column, you can use AsEnumerable to that datatable to get them as a string like;
List<string> list = dt.AsEnumerable()
.Select(r => r.Field<string>("PlayerName"))
.ToList();
You can read: Queries in LINQ to DataSet
By the way, you should always use parameterized queries. This kind of string concatenations are open for SQL Injection attacks.
Also use using statement to dispose your connection and command automatically as I did for OleDbDataAdapter in my example.

C# SQL multiple query results into diffrent textbox

So I'm having this :
Conn.Open();
SqlCommand Comm3 = new SqlCommand("SELECT answer" + " FROM answers" + " WHERE id_answer=5" , Conn);
SqlDataReader DR3 = Comm3.ExecuteReader();
And there is multiple results,how can I now move each of them in diffrent textbox (i already created textboxes? Till now i only managed to get same result into them.

this is normally how i do it....
SqlConnection cn = new SqlConnection("my connection string");
cn.Open();
string sql = "select * from table where column = whatever";
using (SqlCommand cmd = new SqlCommand(sql,cn))
{
SqlDataReader dr = cmd.ExecuteReader();
while (dr.Read())
{
myTextBox1.Text = (string)dr["Column1"];
myTextBox2.Text = (string)dr["Column2"];
myTextBox3.Text = (string)dr["Column3"];
}
dr.Close();
}
cn.Close();
just make sure you are aiming the right column name while looping through them, and cast correctly.

You need to loop through each of the item in the Database table. Think of a foreach loop, where you simply just go through each item and work on it similarly.
Here is a sample for that,
// Create new SqlDataReader object and read data from the command.
using (SqlDataReader reader = command.ExecuteReader())
{
// while there is another record present
while (reader.Read())
{
// write the data on to the screen
textBox.Text = reader[0];
}
}
This will add the value of reader's first column (answer) to the textBox. Now make sure you're calling correct textBox to add the value to.
http://www.codeproject.com/Articles/823854/How-to-connect-SQL-Database-to-your-Csharp-program Do give this article a read.

Pervasive SQL System Stored Procedure from ADO.NET error

I'm just trying to return a list of columns and their attributes through a system stored procedure. What documentation I have seems to say the below code should work, but I get "Pervasive.Data.SqlClient.Lna.k: [LNA][Pervasive][ODBC Engine Interface]Invalid or missing argument." on the execute. This is PSQL v11, .NET 4.5.
using (PsqlConnection conn = new PsqlConnection(cs))
{
PsqlCommand locationCmd = new PsqlCommand();
PsqlParameter tableParam = new PsqlParameter();
PsqlParameter returnParam = new PsqlParameter();
returnParam.Direction = ParameterDirection.ReturnValue;
locationCmd.CommandText = "psp_columns";
locationCmd.Connection = conn;
locationCmd.CommandType = CommandType.StoredProcedure;
locationCmd.Parameters.Add(tableParam).Value = table;
locationCmd.Parameters.Add(returnParam);
conn.Open();
locationCmd.ExecuteNonQuery();
}

I would think the problem is this line:
locationCmd.Parameters.Add(tableParam).Value = table;
You should set the value before adding the parameter, not afterwards.
tableParam.Value = table;
locationCmd.Parameters.Add(tableParam);
I don't know about Psql but for MSSQL normally you also need to define the parameter name as its found in the stored procedure, or at least that's what I do.
SqlParameter param = new SqlParameter("#tableParam", value);

The psp_Columns system stored procedure is defined as call psp_columns(['database_qualifier'],'table_name', ['column_name']). I know that it says the database qualifier is optional, but I think it's required. You could try passing an empty string for the qualifier. Something like:
using (PsqlConnection conn = new PsqlConnection(cs))
{
PsqlCommand locationCmd = new PsqlCommand();
PsqlParameter dbParam = new PsqlParameter();
PsqlParameter tableParam = new PsqlParameter();
PsqlParameter returnParam = new PsqlParameter();
returnParam.Direction = ParameterDirection.ReturnValue;
locationCmd.CommandText = "psp_columns";
locationCmd.Connection = conn;
locationCmd.CommandType = CommandType.StoredProcedure;
locationCmd.Parameters.Add(dbParam).Value = ""; //might need two single quotes ('')
locationCmd.Parameters.Add(tableParam).Value = table;
locationCmd.Parameters.Add(returnParam);
conn.Open();
locationCmd.ExecuteNonQuery();
}

You should try to get the information of the table SCHEMA using the provided GetSchema method from the Psqlconnection. I have searched a bit on their support site and it seems that this method is supported although I haven't find a direct example using the Tables collection.
This is just an example adapted from a test on mine on SqlServer, I don't have Pervasive install, but you could try if the results are the same
using(PsqlConnection cn = new PsqlConnection("your connection string here"))
{
cn.Open();
string[] selection = new string[] { null, null, table };
DataTable tbl = cn.GetSchema("Columns", selection);
foreach (DataRow row in tbl.Rows)
{
Console.WriteLine(row["COLUMN_NAME"].ToString() + " " +
row["IS_NULLABLE"].ToString() + " " +
row["DATA_TYPE"].ToString()
);
}
}

i was trying to figure this out as well, but with the tables procedure. even though the database and table names are optional, you still have to provide values. for optional parameters, pass in DBNull.Value
this worked for me:
PsqlCommand cm = new PsqlCommand();
cm.CommandText = "psp_tables";
cm.CommandType = CommandType.StoredProcedure;
cm.Connection = new PsqlConnection();
cm.Connection.ConnectionString = <your connection string>;
cm.Parameters.Add(":database_qualifier", DBNull.Value);
cm.Parameters.Add(":table_name", DBNull.Value);
cm.Parameters.Add(":table_type", "User table");