SqlCommand.ExecuteScalar()
May 4, 2006Is there documentation on what ExecuteScalar() will return if the SQL statement is returning an image?
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The Best Overloaded Method Match For 'System.Data.SqlClient.SqlCommand.SqlCommand Error
Sep 21, 2006Hi,I'm new to ASP.NET, and am currently looking into XML.I'm trying to write XML using data from an SQL Server 2000 table. But I seem to be getting the following error regarding the SQL Server connection:Compiler Error Message: CS1502: The best overloaded method match for 'System.Data.SqlClient.SqlCommand.SqlCommand(string, System.Data.SqlClient.SqlConnection)' has some invalid argumentsSource Error:Line 23: {
Line 24: SqlDataAdapter mySqlDataAdapter = new SqlDataAdapter();
Line 25: mySqlDataAdapter.SelectCommand = new SqlCommand(queryString, connString);
Line 26: mySqlDataAdapter.Fill(myDataSet);
Line 27: return myDataSet;Source File: c:InetpubwwwrootmappingcreateGeoRSSFile.aspx.cs Line: 25 This is my code:using System;
using System.Data;
using System.Data.SqlClient ;
using System.Configuration;
using System.Collections;
using System.Text;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Xml;
public partial class createGeoRSSFile : System.Web.UI.Page
{
protected void Page_Load(object sender, DataSet myDataSet, EventArgs e)
{
string connString = "server=SQLSERV1;database=Historical_Statistics;UID=dbuser;PWD=Password";
string queryString = "SELECT Town, PostCode, Latitude, Longitude FROM UKPostCodes";
using (SqlConnection mySqlConnection = new SqlConnection(connString))
{
SqlDataAdapter mySqlDataAdapter = new SqlDataAdapter();
mySqlDataAdapter.SelectCommand = new SqlCommand(queryString, connString);
mySqlDataAdapter.Fill(myDataSet);
return myDataSet;
}
// Create a new XmlTextWriter instance
XmlTextWriter writer = new XmlTextWriter(Response.OutputStream, Encoding.Unicode);
// Start writing!
writer.WriteStartDocument();
writer.WriteStartElement("item");
// Creating the <town> element
writer.WriteStartElement("town");
writer.WriteElementString("PostCode",myDataSet .Tables[1].Columns("PostCode"));
writer.WriteElementString("geo:lat",myDataSet.Tables[1].Columns("Latitude"));
writer.WriteElementString("geo:lon", myDataSet.Tables[1].Columns("Longitude"));
writer.WriteEndElement();
writer.WriteEndElement();
writer.WriteEndDocument();
writer.Flush();
writer.Close();
}
}What seems to be causing this error?Thanks.
Passing An SQLcommand To A Asp.net Web Service As Sqlcommand
Feb 10, 2008Hi
Is it possible To pass an SQL command to a ASp.net web service as system.data.SQLclient.sqlcommand?
That means is ispossible to pass the actuall sql command instead of just the string?
If yes how can you do that??
Cheers
ExecuteScalar
Mar 23, 2007private void buttonLogin_Click(object sender, EventArgs e)
{
SqlConnection conn = new SqlConnection();
conn.ConnectionString = "Data Source=.\SQLEXPRESS;AttachDbFilename=|DataDirecto ry|\PEService.mdf;Integrated Security=True;User Instance=True";
conn.Open();
string strSQL = "Select Count(*) as ctr From Cust Where Email=" + textBoxEmail + "and Passwd=" + textBoxPW;
SqlCommand cmd = new SqlCommand(strSQL,conn);
int ctr=(int)cmd.ExecuteScalar();
if (ctr == 1)
MessageBox.Show("Correct");
else
MessageBox.Show("Wrong");
conn.Close();
}
i have this code for my login form. when i remove conn.Open(); in the code
it says... ExecuteScalar requires an open and available Connection. The connection's current state is closed.
and when i put conn.Open();
it says... An attempt to attach an auto-named database for file C:... failed. A database with the same name exists, or specified file cannot be opened, or it is located on UNC share.
what is the problem?
ExecuteScalar() Not Returning Value?
Dec 12, 2007Okay so here's a wierd one. I use SQLYog to peek into/administrate my databases.I noticed that this chunk of code is not producing a value... Using Conn As New MySqlConnection(Settings.MySqlConnectionString)
Using Cmd As New MySqlCommand("SELECT COUNT(*) FROM tbladminpermissions WHERE (PermissionFiles LIKE '%?CurrentPage%') AND Enabled=1", Conn)
With Cmd.Parameters
.Add(New MySqlParameter("?CurrentPage",thisPage))
End With
Conn.Open()
Exists = Cmd.ExecuteScalar()
End Using
End Using Exists is declared outside of that block so that other logic can access it. thisPage is a variable declared outside, as well, that contains a simple string, like 'index.aspx'. With the value set to 'index.aspx' a count of 1 should be returned, and is returned in SQLYog. SELECT COUNT(*) FROM tbladminpermissions WHERE (PermissionFiles LIKE '%index.aspx%') AND Enabled=1 This produces a value of 1, but NO value at all is returned from Cmd.ExecuteScalar(). I use this method in MANY places and don't have this problem, but here it rises out of the mist and I can't figure it out. I have no Try/Catch blocks so any error should be evident in the yellow/red error screen, but no errors occur in the server logs on in the application itself. Does anybody have any ideas?
ExecuteScalar() Returns -1
Oct 15, 2004The following query returns 0 when executing in Query Analyzer:SELECT isnull(Count(*),0) as total FROM SplitDetail WHERE SiteCode = 14 AND ProjectID = 4367Yet ExecuteScalar() in vb.net return a -1.
Any ideas on what I might be doing wrong... ?
Get Count With Executescalar()
Apr 18, 2005Howdie y'all!
I'm trying to do an executescalar() on the next stored procudure...
SELECT COUNT(*) FROM tblUsers WHERE UserEmail = @UserEmail;
Strangely enough I get SqlServer exception that tells me there's a syntax error.
Is there something I'm overseeing?
Cheers,
Wes
ExecuteScalar Problems. Need Help
Apr 26, 2006Hi all
I am currently developing a Help Desk for our company. One of my problems is Data lookups in other tables within a SQL 2000 DB. i.e. Client Details and Information in one table (hd_clients) and Client History (hd_history) in another.
'hd_history' contains a column called 'c_id' which references the 'hd_clients' table 'c_id' column A typical One-to-Many relationship. When a user goes to the Help Desk's Service page. I want to display the client's name in one of my GridView's Databound Columns. See Below:
...
<asp:TemplateField HeaderText="Client" SortExpression="c_id">
<ItemTemplate>
<asp:Label ID="lblClient" runat="server" Text='<%#GetClient(Eval("c_id")) %>' />
</ItemTemplate>
</asp:TemplateField>
...
This then calls: GetClientName - Which is as follows.
...
Public Function GetClientName(ByVal ClientID)
Dim ScalarValue As String = ""
Dim myConnection As New SqlConnection("Data Source=XXX; Initial Catalog=XXX; uid=XXX; pwd=XXX")
Dim myCommand As New SqlCommand("SELECT [Name] FROM [hd_clients] WHERE [c_id] = @ClientID", myConnection)
myCommand.Parameters.Add("@ClientID", SqlDbType.Int)
myCommand.Parameters("@ClientID").Value = ClientID
Try
myConnection.Open()
ScalarValue = myCommand.ExecuteScalar
Catch ex As Exception
Console.Write(ex.Message)
End Try
If ScalarValue > "" Then
Return ScalarValue.ToString
Else
Return "<span style='color: #CCCCCC'>- NULL -</span>"
End If
End Function
...
This works perfectly on my Laptop (which runs the IIS and SQL Server Instances + VS2005). But, when placed on our production server brings back the '- null -' value instead of the Client's Name. I have set both machines up in exaclty the same way - and cannot get this to work. I have tried 'ExecuteReader' but from what I understand is 'ExecuteScalar' is better for single value lookups.
Any help in this matter would be great and really appreciated. Thanks.
David
ExecuteScalar - Count(*)
Mar 25, 2007i have Cust table with 5 columns (Name, Add, Contact, UserID, Passwd)
my sql statement is not working correctly..
"SELECT COUNT(*) FROM Cust WHERE UserID='" + textBoxEmail + "'AND Passwd='" + textBoxPW + "'"
what maybe the problem? i have 1 record and when im running it, whether the input is right or wrong, the count is always zero(0). i think the problem is in my sql statement(maybe in the where clause) because i tried counting the records by "select count(*) from cust" and it correctly says 1 record. pls help!
How To Store ExecuteScalar Value Into Variable ?
Oct 16, 2006I having a strange problem, my code is as below: cmd.connection = cnncmd.commandtext = "select count(*) from member" dim i as integeri = cInt(cmd.executescalar) However, what the result tat i get is "&H0" ! When I use the same query in sqlquery, it did show out the result as "11".I have no idea abt wat is goin on, can anyone gv me some guide ? Thanks.
View 2 Replies View RelatedExecuteScalar And 2 Rows In My DB On Every Write?
May 30, 2008Hey folks, I was just learning how to work with ScopeIdentity and I found out I needed somthing called executescalar. Things seem to be working really well, and I think I did it write, except I'm having one strange little oddity. Everytime my page writes to my databases, it writes rows. I'm really curious to know what I did wrong. Any ideas? Thank you as always :-)
Public Sub newoptic(ByVal sender As Object, ByVal e As System.EventArgs) Handles newpostBTN.Click
If newpostTXTBX.Text = "" Then
Exit Sub
End If
Dim mySQL As String = "insert into msg_topics (topic_title, topic_forum_id) values (@topicTITLE, @forumID); Select Scope_Identity()"Dim myConn As New SqlConnection(System.Configuration.ConfigurationManager.AppSettings("DBconnect"))
Dim cmd As New SqlCommand(mySQL, myConn)cmd.Parameters.AddWithValue("@topicTITLE", newposttitleTXTBX.Text)
cmd.Parameters.AddWithValue("@forumID", HDN_topic_forum_ID_LBL.Text)
myConn.Open()Dim topic_ID_holder As Integer = cmd.ExecuteScalar()
HDN_topic_id_holder_LBL.Text = (topic_ID_holder)
cmd.ExecuteNonQuery()
myConn.Close()
End Sub
Oh, one more quick question if whoever responds knows the answer. Why do I need a semi-colon here "@forumID); Select" ? The websites I learned about this from didn't explain that, and I've never used a semicolon in my select statements before, so I figured there must be something special about it.
Thank you
Getting GUID Value From StoredProcedure.ExecuteScalar()
Jun 12, 2008I need to execute stored procedure which is suppose to return GUID to my IF statement and if it is Nothing I execute other Stored procedures else some other procedures. My problem is that even though by looking at the data I know that after the execution of the procedure it should return some guid value it doesn't anybody who had the same issue??? That is the code block where I am trying to return guid from my stored procedure: getGroupID.Parameters("@GroupName").Value = dr.Item("Group ID").ToString() If getGroupID.ExecuteScalar() = Nothing Then 'Find Group by IP address if input Data Table doesn't have group getGroupIDByIP.Parameters("@IP").Value = dr.Item("IP").ToString() If getGroupIDByIP.ExecuteScalar() = Nothing Then insertGroup.Parameters("@GroupID").Value = Guid.NewGuid insertGroup.Parameters("@Group").Value = dr.Item("Group ID") insertGroup.Parameters("@ACCID").Value = getAccID.ExecuteScalar() insertGroup.ExecuteNonQuery() command.Parameters("@Group_ID").Value = getGroupID.ExecuteScalar() Else command.Parameters("@Group_ID").Value = getGroupIDByIP.ExecuteScalar() End If Else command.Parameters("@Group_ID").Value = getGroupID.ExecuteScalar() End If Thank you
View 2 Replies View RelatedExecuteScalar Returns Null
Oct 25, 2006I am using the following C# code and T-SQL to get result object from aSQL Server database. When my application runs, the ExecuteScalarreturns "10/24/2006 2:00:00 PM" if inserting a duplicated record. Itreturns null for all other conditions. Does anyone know why? Doesanyone know how to get the output value? Thanks.------ C# -----aryParams = {'10/24/2006 2pm', '10/26/2006 3pm', 2821077, null};object oRtnObject = null;StoredProcCommandWrapper =myDb.GetStoredProcCommandWrapper(strStoredProcName ,aryParams);oRtnObject = myDb.ExecuteScalar(StoredProcCommandWrapper);------ T-SQL ---ALTER PROCEDURE [dbo].[procmyCalendarInsert]@pBegin datetime,@pEnd datetime,@pUserId int,@pOutput varchar(200) outputASBEGINSET NOCOUNT ON;select * from myCalendarwhere beginTime >= @pBegin and endTime <= @pEnd and userId = @pUserIdif @@rowcount <0beginprint 'Path 1'set @pOutput = 'Duplicated reservation'select @pOutput as 'Result'return -1endelsebeginprint 'Path 2'-- check if upperlimit (2) is reachedselect rtrim(cast(beginTime as varchar(30))) + ', ' +rtrim(cast(endTime as varchar(30))),count(rtrim(cast(beginTime as varchar(30))) + ', ' +rtrim(cast(endTime as varchar(30))))from myCalendargroup by rtrim(cast(beginTime as varchar(30))) + ', ' +rtrim(cast(endTime as varchar(30)))having count(rtrim(cast(beginTime as varchar(30))) + ', ' +rtrim(cast(endTime as varchar(30)))) =2and (rtrim(cast(beginTime as varchar(30))) + ', ' +rtrim(cast(endTime as varchar(30))) =rtrim(cast(@pBegin as varchar(20)))+ ', ' + rtrim(cast(@pEnd asvarchar(20))))-- If the @@rowcount is not equal to 0 then-- at the time between @pBegin and @pEnd the maximum count of 2 isreachedif @@rowcount <0beginprint 'Path 3'set @pOutput = '2 reservations are already taken for the hours'select @pOutput as 'Result'return -1endelsebeginprint 'Path 4'--safe to insertinsert dbo.myCalendar(beginTime, endTime,userId)values (@pBegin, @pEnd, @pUserId)if @@error = 0beginprint 'Path 4:1 @@error=' + cast(@@error as varchar(1))print 'Path 4:1 @@rowcount=' + cast(@@rowcount as varchar(1))set @pOutput = 'Reservation succeeded'select @pOutput as 'Result'return 0endelsebeginprint 'Path 4:2 @@rowcount=' + cast(@@rowcount as varchar(1))set @pOutput = 'Failed to make reservation'select @pOutput as 'Result'return -1endendendEND
View 1 Replies View RelatedGetting NullReferenceException When Executing ExecuteScalar()
Nov 20, 2007I'm trying to add user information to the database however I'm getting a NullReferenceException.
Here's the code:
SqlCommand UserAddCommand = new SqlCommand();
int AssignedUserID = 0;
UserAddCommand.CommandType = CommandType.StoredProcedure;
UserAddCommand.Connection = m_DBConnection;
UserAddCommand.CommandText = "SP_UserAdd";
UserAddCommand.Parameters.AddWithValue("@User_Name", DbType.String);
UserAddCommand.Parameters.AddWithValue("@Street_Address", DbType.String);
UserAddCommand.Parameters.AddWithValue("@City", DbType.String);
UserAddCommand.Parameters.AddWithValue("@State", DbType.AnsiStringFixedLength);
UserAddCommand.Parameters.AddWithValue("@Zip_Code", DbType.AnsiStringFixedLength);
UserAddCommand.Parameters.AddWithValue("@Email_Address", DbType.String);
UserAddCommand.Parameters.AddWithValue("@Phone_Number", DbType.AnsiStringFixedLength);
UserAddCommand.Parameters.AddWithValue("@User_Login_Name", DbType.String);
UserAddCommand.Parameters.AddWithValue("@User_Password", DbType.String);
UserAddCommand.Parameters.AddWithValue("@Referrer_Name", DbType.AnsiStringFixedLength);
UserAddCommand.Parameters.AddWithValue("@User_Type", DbType.AnsiStringFixedLength);
UserAddCommand.Parameters["@User_Name"].Value = UserInfo.Name;
UserAddCommand.Parameters["@Street_Address"].Value = UserInfo.StreetAddress;
UserAddCommand.Parameters["@City"].Value = UserInfo.City;
UserAddCommand.Parameters["@State"].Value = UserInfo.State;
UserAddCommand.Parameters["@Zip_Code"].Value = UserInfo.ZipCode;
UserAddCommand.Parameters["@Email_Address"].Value = UserInfo.EmailAddress;
UserAddCommand.Parameters["@Phone_Number"].Value = UserInfo.PhoneNumber;
UserAddCommand.Parameters["@User_Login_Name"].Value = UserInfo.UserName;
UserAddCommand.Parameters["@User_Password"].Value = UserInfo.UserPassword;
UserAddCommand.Parameters["@Referrer_Name"].Value = UserInfo.ReferrerName;
if ((int)UserInfo.User_Type == (int)ClassUserInfo.UserType.FAMILY)
{
UserAddCommand.Parameters["@User_Type"].Value = "Family";
}
else if ((int)UserInfo.User_Type == (int)ClassUserInfo.UserType.FRIEND)
{
UserAddCommand.Parameters["@User_Type"].Value = "Friend";
}
else if ((int)UserInfo.User_Type == (int)ClassUserInfo.UserType.MANAGER)
{
UserAddCommand.Parameters["@User_Type"].Value = "Manager";
}
else if ((int)UserInfo.User_Type == (int)ClassUserInfo.UserType.OWNER)
{
UserAddCommand.Parameters["@User_Type"].Value = "Owner";
}
try
{
AssignedUserID = (int)UserAddCommand.ExecuteScalar(); this line of code produces the NullReferenceException
UserInfo.UserID = AssignedUserID;
m_UserInfo = UserInfo;
}
catch (Exception Ex)
{
Console.WriteLine(Ex.ToString());
}
Please help me figure out what I am doing wrong.
Calling Method To Do Executescalar With Parameters
Feb 15, 2008I have a method like follows:
string EmpCount = null;
DateTime _dtstart = Convert.ToDateTime(txtStart.Text.Trim());
DateTime _dtend = Convert.ToDateTime(txtEnd.Text.Trim());SQLProvider sqlp = new SQLProvider(System.Configuration.ConnectionStrings["ConString"].ConnectionString);string SqlText = @"
select count(*) from employee
where activeemp=1 and startdate BETWEEN @dtstart and @dtend;
using (sqlp.Connection) {
sqlpm [] param = {
new sqlpm("dtStart", _dtstart),
new SqlP("dtEnd", _dtend)
};
}EmpCount = sqlp.ExecuteScalar(SqlText, param).ToString();
return Convert.ToInt32(mbrCount);
Then the method I am calling is:public Object ExecuteScalar(String sqlText, Sqlp[] param)
{try
{
//Some Code here
}
}
So in the calling method (ExecuteScalar), the second parameter is defined as an array, is it ok to have an array in the called method too?
ExecuteScalar Returns 0 (null) But INSERT Is Successful.
Sep 25, 2007
I have code that has worked just fine for some time, and now all of the sudden I am having an issue. I have a simple INSERT statement built and then make the following call:
RecordID = cmd.ExecuteScalar
I have never had a problem with this before. The RecordID of the newly inserted record is returned into the RecordID Integer varibale. All of the sudden, the varibale has a value of 0 (null I assume is being returned), but yet the INSERT worked just fine. I can check the table in SQL and it is populated with no issues.
No exception is thrown of any type or anything. Does anybody know what may be happening?
Help With Sqlcommand...
Jan 8, 2007Hi guys. I'm having trouble declaring an sqlcommand. What I want to do is declare a global sqlcommand and I would want this sqlcommand to vary depending on the conditions on my page_load.
Here's the code....
Dim p_s_syounin2 As New SqlCommand
Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs)
If (Session("syozokubu_id") = 20) And (Session("syozokuka_id") = 21) And ((Session("kaikyuu_id") = 23)) Then
p_s_syounin2 = ("INSERT INTO (p_s_syounin2) SELECT syain_hnm FROM TR_syainID WHERE TR_syainID.syozokubu_id=20 AND TR_syainID.syozokuka_id=21 AND TR_syainID.kaikyuu_id=23, cnn") '''' THIS DOES NOT WORK!
End If
End Sub
p_s_syounin2 .ExecuteNonQuery()
What is the correct way of declaring p_s_syounin2?
Thanks.
Best Regards,
Audrey
Re-use SqlCommand Object
Oct 19, 2006Is it ok to re-use a SqlCommand object? In a method, I am executing 2 separate parameterized sql statements. Before I run the second, I will clear the command objects parameters.(command.parameters.clear()) I'm just checking to see if it is good coding practice or not. thanks,SC
View 2 Replies View RelatedXML Parameter In Sqlcommand
Mar 6, 2007I created an xmldocument which I would like to insert in a db field with the data type XML.The following code is giving me the error:System.Data.SqlClient.SqlException: XML parsing: line 1, character 38, unable to
switch the encoding SqlCommand cmdUpdate = new SqlCommand("sp_AddHistory", sqlConnection); cmdUpdate.CommandType = CommandType.StoredProcedure; cmdUpdate.Parameters["@FieldsChanged"].Value = xmlDoc.innerXML; // don't know whether this is good cmdUpdate.ExecuteNonQuery(); innerXML:<?xml version="1.0" encoding="utf-8"?><Fields> <Field> <FieldName>comp_Area</FieldName> <OldValue>Area 52</OldValue> <NewValue>Area 51</NewValue> </Field></Fields> The XML seems fine.. any ideas?
How To Use A Variable In A SQLCommand?
May 10, 2007Hi! I need to know what can I do to use a variable in the WHERE condition of the sqlcommand as I show you: current_user = User.Identity.Name
Dim cmd As New SqlCommand("SELECT [id_usuario], [nombre], [apellidos], [telefono], [empresa] FROM [usuario] WHERE [id_usuario] = current_user", cn) Obviously it doesn't work and I need your help. Thanks.
SqlCommand Error
Oct 17, 2007Hello,
I am trying to insert a value into a specific row in a table. The error comes from the myCommand2 statement but i don't know how to solve it. Please help!
My code is as follows:SqlCommand myCommand = new SqlCommand("select count(*) from updatetable", myConnection);
myReader = myCommand.ExecuteReader();
while (myReader.Read())
int count = myReader.GetInt32(0);
SqlCommand myCommand2 = new SqlCommand("insert into interface (Total) where description = 'Graphicads' value ( " + count + ")", myConnection2);myCommand2.CommandType = CommandType.Text;
myCommand2.ExecuteNonQuery();
Re-use Of SqlConnection And SqlCommand ?
Oct 26, 2007Hi,When using the following controls....System.Data.SqlClient.SqlConnection System.Data.SqlClient.SqlCommandIf I want to change my SQL command and execute the query once again what cleanup do I need to do first?Do I need close and dispose the SqlConnection?Do I need to dispose the SqlCommand?Can I use the SqlConnection for more than one SqlCommand?Thanks,Scott
View 5 Replies View RelatedSqlCommand Problem
Nov 23, 2007Hello all, when I write my CommandText, It displays it as insert into videos values (127.0.0.1, 4000, 434), which the ip address is sent int as a string, put i keep getting an error, and I think it is because it is wanting an string, but it is sending in these "." or something, anyways heres my method, I dont know how I can add " " around the ip when i pass it in, since it is a string. thanks.
1 [WebMethod]
2 public void Register(string ip, int port, int[] handles)
3 {
4 SqlConnection dbConn = new SqlConnection(connStr);
5 SqlCommand comm = new SqlCommand();
6 comm.Connection = dbConn;
7 dbConn.Open();
8 for (int i = 0; i < handles.Length; i++)
9 {
10 comm.CommandText = "insert into videos values (" + ip + ", " + port + ", " + handles[i] + ")";
11 comm.ExecuteNonQuery();
12 }
13 dbConn.Close();
14 }
SqlCommand Parameters.Add
Mar 12, 2008Using SqlCommand, this is how I am updating a database table:
Sub UpdateDataGrid(obj As Object, ea As DataGridCommandEventArgs) strSQL = "UPDATE Basket SET Quantity = Qty, Total = TotAmt WHERE BasketID = BID AND ProductID = PID" sqlCmd = New SqlCommand(strSQL, sqlConn) With sqlCmd .Parameters.Add("Qty", SqlDbType.Int).Value = CInt(iQty) .Parameters.Add("TotAmt", SqlDbType.Money).Value = CInt(iQty) * CType(ea.Item.FindControl("lblPrice"), Label).Text .Parameters.Add("BID", SqlDbType.VarChar, 50).Value = strBasketID .Parameters.Add("PID", SqlDbType.VarChar, 50).Value = CType(ea.Item.FindControl("lblID"), Label).Text End With sqlConn.Open() sqlCmd.ExecuteNonQuery() sqlConn.Close()End Sub
But the above code generates the following error pointing to the red colored line in the above code:
Invalid column name 'BID'.Invalid column name 'PID'.
BID & PID are not the column names in the actual database table but can't it be done in the way I have done above? In fact, Qty & TotAmt are not the column names in the actual database table as well; so why isn't the error pointing to Qty & TotAmt as they will be evaluated before BID & PID, if I am not mistaken?
SqlCommand Check
Apr 15, 2008How can I check if the ( SqlCommand ) return empty values
Can some one write code for this, I want know it is return Null values or not
thanx ....
SqlCommand Array Help
Feb 19, 2006I want to do something like the following but I get an error: Object reference not set to an instance of an object. SqlConnection sqlConnection = new SqlConnection("server=xxxxx"); SqlCommand [] cmd = new SqlCommand[3]; Object returnValue; cmd[0].CommandText = "DO QUERY"; cmd[1].CommandText = "DO QUERY"; cmd[2].CommandText = "DO QUERY"; cmd[3].CommandText = "DO QUERY"; } sqlConnection.Open();int i = 0;while(i<4){ cmd[i].CommandType = CommandType.Text; cmd[i].Connection = sqlConnection; cmd[i].ExecuteNonQuery(); returnValue[i] = cmd[i].ExecuteScalar();i++} sqlConnection.Close();How should I do the followingThanks
View 9 Replies View RelatedHow To Debug A SqlCommand?
Mar 7, 2006How to test @au_lname's value sends to the following following sql command?
Dim MyCommand As New SqlCommand("UPDATE [authors] SET [au_lname] = @au_lname", MyConnection)MyCommand.Parameters.Add(New SqlParameter("@au_lname", SqlDbType.NVarChar)).Value = me.au_lname.text
I tried to print the "MyCommand.CommandText.ToString" but only get UPDATE [authors] SET [au_lname] = @au_lname with no value in the command text.
Thanks!
SqlCommand Parameters
May 17, 2006Hi:
I am using sqlcommand.parameters.add() and up to 74 parameters for one sqlcommand, it gets the error "too many parameters for the sqlcommand", I wonder if someone know is there limitation of the paramters that I can pass to sqlcommand? If so, how many parameters I can pass to the sqlcommand at one time?
thank u in adv.
New Sqlcommand Question???
May 30, 2006Hello,I was trying to do the following: Dim cmd As SqlCommand Dim objConnection As SqlConnection objConnection = New SqlConnection = Web.configwhere the We.config is where my connection string is set. but I get a sintax error in the Web.config line.is it possible to asign the value of the web.config content to the new sql connection?thanks for any suggestions.
View 1 Replies View RelatedSqlCommand And Nullable Parameters
Aug 1, 2006I am trying to add a DateTime? parameter to SqlCommand. It works when the variable has a value, but when its null, an exception gets thrown saying that parameter was not supplied.What is causing this error?
View 5 Replies View RelatedUsing Both Sqlcommand And Sqldataadpter Objects
Jan 29, 2007Hi
Just a doubt: s it possible to write an ado.net code that uses a sqldataadpter object and a sqlcommand object ( BOTH OBJECTS, IS IT POSSIBLE?) to retrieve data from the database by calling a stored procedure.
Thanks a lot
Passing Variable To SqlCommand
May 18, 2007Can't seem to pass a variable to the sql statement. I'd appreciate any help. I'm trying to pass pColName to CommandText = "ALTER TABLE tb_roomInfo ADD @rColName varchar(50);";Doesn't seem to work though. CODE: [WebMethod] public string addCol(string pColName) { SqlConnection cnn = new SqlConnection(connString); try { cnn.Open(); SqlCommand cmd = new SqlCommand(); cmd.Connection = cnn; cmd.CommandText = "ALTER TABLE tb_roomInfo ADD @rColName varchar(50);"; SqlParameter rColName = new SqlParameter("@rColName", pColName); cmd.Parameters.Add(rColName); int i = cmd.ExecuteNonQuery(); cnn.Close(); return "Insert Successful"; } catch { return "Insert Unsuccessful"; } }
View 3 Replies View RelatedHow To Set SQLCommand Timeout For SqlDataSource For ASP.NET 2.0?
Oct 16, 2007With VS2005, there is a new component SqlDataSource, <asp:SqlDataSource ID="SqlDataSource1" runat="server"></asp:SqlDataSource> Then you can assign SP and bind datasource to a get data for this component in .NET code:SqlDataSource1.SelectCommand = "spName"SqlDataSource1.SelectCommandType = SqlDataSourceCommandType.StoredProcedure SqlDataSource1.ConnectionString = Comm.connString There is no way to set sqlcommand timeout for this stored procedure like SqlClient.SqlCommand. How can I do this?
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