ADO.NET :: Difference Between ExecuteDataSet And ExecuteReader?
Feb 21, 2011What is the difference between ExecuteDataSet and ExecuteReader.
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Dec 24, 2010what is the exact difference between Sqlhelper.ExecuteReader and Sqlhelper.ExecuteXmlReaderand which on is faster
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Nov 16, 2010I am trying to complete my function below but got lost in the different methods out there. It will always return 1 row and I need to get the values of the record and ADD into a new row. The function returns a DataTable.
[Code]....
ADO.NET :: Getting Error That ExecuteReader: Connection Property Has Not Been Initialized?
Jan 24, 2011protected void Button1_Click(object sender, EventArgs e)
{
SqlCommand cmd;
[code]...
I am getting error that ExecuteReader: Connection property has not been initialized
DataSource Controls :: Executereader Is Taking To Much Time?
Jun 29, 2010I'm using data access block [URL] in asp.net 3.5. Back end is sql server 2005. It's working fine and returns result instantly for all DB calls. But, I've a problem with one SP. When I call it, executereader is taking too much time. In few cases, it is executed. And sometimes I get the Time out error. I run the same SP in sql server. It returns 9000 rows in 3 seconds.
View 3 RepliesSQL Server :: Maxlength Of A String When Retrieved Via Executereader?
Mar 7, 2011Dim reader As SqlDataReader
reader = cmd.ExecuteReader
Dim XML As String = reader("records").ToString
I've executed the command in SQL server and I get a result string with length of 54781But when I execute it via .NET and assign it to the XML variable, the length of XML is always 2033...so now Im thinking that the result column "records" cannot exceed this length for some reason...
Unable To Get Stored Procedure Output Variable Through ExecuteReader
Jan 10, 2011here my code-
using (SqlDataReader sqlDataReader = ExecuteReader(CommandType.StoredProcedure, StoredProcedures.AuthenticateUser, sqlParameter))
{
isAuthenticated = Convert.ToBoolean(sqlParameter[2].Value);
if (isAuthenticated)
{
if (sqlDataReader.Read())
{
User = new UserEntity();
DbHelper.GetEntity(sqlDataReader, User);
}
}
}
I always get isAuthenticated as false because sqlParameter[2].Value is null all the time but when I execute my query with ExecuteNonQuery it gives me the value but in that case I can not fill the entity.
C# - Bind An ExecuteReader Command To A Dropdownlist So The User Can Select A Value?
Apr 8, 2010After trying many solutions listed on the internet I am very confused now. I have a C#/SQL web application for which I am simply trying to bind an ExecuteReader command to a Dropdownlist so the user can select a value. This is a VS2008 project on an XP OS.
How it works is after the user selects a table, I use this selection as an input parameter to a method from my Datamatch.aspx.cs file. Then this Datamatch.aspx.cs file calls a method from my ADONET.cs class file. Finally this method executes a SQL procedure to return the list of columns from that table. (These are all tables in Adventureworks DB). I know that this method returns successfully the list of columns if I execute this SP in SSMS. However, I'm not sure how to tell if it works in VS or not.This should be simple. How can I do this? Here is some of my code. The T-sQL stored proc:
CREATE PROCEDURE [dbo].[getColumnNames]
@TableName VarChar(50) AS
BEGIN
SET NOCOUNT ON;
[code]...
The CreateLabels method above correctly shows me the labels. But the CreateDropDownLists method just shows me one dropdownlist with nothing in it. In other words, it is not selectable. So how can I verify that the datareader is returning all 4 columns and inspect their values? I was able to find from datareader "COLUMN_NAME" but I don't know what properties to search to verify the column names.
Web Forms :: ExecuteReader - No Datagrid Results Returned Since Reader?
Nov 1, 2010I am having problems with the following. On debugging I find that when strKeywords = '', reader = "System.Data.SqlClient.SqlDataReader". However, as soon as strKeywords takes the value of anything else, reader = nothing. But the stored procedure handles the arguments fine, so I am very confused!
[Code]....
Web Forms :: How To Avoid ExecuteReader Requires Open And Available Connection
Feb 25, 2016Some time i getting error below ,but i am did'nt used excutereader
ExecuteReader requires an open and available Connection. The connection's current state is closed.
This my code,
try { if (con.State != ConnectionState.Open) con.Open(); string result;
string Queryip = "ViewIp"; SqlCommand cmdip = new SqlCommand("ViewTranscation", con);
cmdip.CommandType = CommandType.StoredProcedure; cmdip.Parameters.AddWithValue("@QueryType", Queryip); cmdip.Parameters.AddWithValue("@Input1", "");
[Code] ....
SqlHelper.ExecuteReader Results Varying And Unexpected When Certain Number Of Records Are Returned?
Jul 4, 2010Note: You may not need to read the whole thing to know what's wrong... skip down to the part about the 3 scenarios if you'd like. Only read the begin if you'd like some background info on how I've tried implementing this and where the errors occurred.To begin with, I'm trying to retrieve a list of Clients stored in the CRM_Clients table for a given callerId.I retrieve the clients from my Controller with the SelectLiveClientsForCaller method. The message is then passed on to the DAL through the static Instance method in the DataProvider class:
public List<Client> SelectLiveClientsForCaller(int callerID)
{
List<Client> results = new List<Client>();
[code]...
DataSource Controls :: Fails At Rdr = Cmd.ExecuteReader(); And Also Fail At ZipCodes.Add(rdr["h.*"].ToString());?
Feb 25, 2010Im trying to take the example from this website http://blogs.lessthandot.com/index.php/DataMgmt/DataDesign/sql-server-2008-proximity-search-with-th and make it work on my site. Its this part im having troubles with
[Code]...
here is my code from my function that doesnt work.
[Code]...
Any suggestions on how to get it to work? it fails at rdr = cmd.ExecuteReader(); im also worried it will also fail at ZipCodes.Add(rdr["h.*"].ToString());
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However, I've noticed that
<img src='<%=ResolveUrl("~/Images/MyImage.jpg")%>' alt="blah">
works, whereas
<img src='<%: ResolveUrl("~/images/MyImage.jpg")%>' alt="blah">
doesn't.
I'm not sure what the name for these types of expressions are so I've had trouble googling it.
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View 6 RepliesDifference Between <%: And <%=?
Sep 3, 2010Possible Duplicate:
ASP.NET “special” tags
I hope this isn't too much of a newbie question. I seem to always use the correct syntax, but I don't really understand why I'm using the <%: and <%= in ASP.NET, and I was hoping someone could clarify for me. I found this article which explains <%= and <%#, but wasn't able to find anything in Google on <%:.
Examples of where I have used the various syntax:
<div>
<%: Html.LabelFor(model => model.Type) %>
<%: Html.TextBoxFor(model => model.Type)%>
</div>
and
<div id="header-menu">
<ul>
<li><%= Html.ActionLink("Home", "", "Home" )%></li>
</ul>
</div>
Possible Answer (per ChrisF): ASP.NET "special" tags
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Yet with the few examples of ASP.NET I've seen so far it seems ASP.NET has two types of server interpreted tags.
Most of the time I see <asp:XXXX > tags such as
<asp:ContentPlaceHolder ID="HeadContent" runat="server">
</asp:ContentPlaceHolder>
but I also see regular ASP tags like
<%@ Master Language="C#" AutoEventWireup="true" CodeBehind="Site.master.cs" Inherits="TailspinSpyWorks.SiteMaster" %>
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What Is The Difference Between These 2 Objects
Mar 10, 2010Have a C# application. When I look in the project folder I see an .exe in bin/debug folder, when I click it executes the application fine. I also see the same .exe in obj/debug folder, when I click it executes but gives me error. What is the difference between these 2 objects and why do I have 2 of them?
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