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• ASP.NET MVC 2 Post AJAX from from JavaScript

  - by ANDyW

  Hi, I got control with strongly typed View, with Ajax.BeginForm(). Now I would like to change submit method from <input type="submit" id="testClick" value="Submit" /> To some javascript method DoSubmit(). What I tried is : Invoke click on that submit button Invoke submit on form ('form1').submit(), document.forms['form1'].submit() jQuery forms with ('form1').AjaxSubmit(); Create jQuery AJAX $.ajax({ type: "POST", url: $("#form1").attr("action"), data: $("#form1").serialize(), success: function() { alert("epic win!!!1!1!") }, error: function(XMLHttpRequest, textStatus, errorThrown) { alert("epic fail!") } }); All those method created normal request (not AJAX), or they didn't work. So anyone know how I can do AJAX submit "Form", from JavaScript and strongly typed mechanism (public AcrionResult MyFormAction(FormModel model); ) will work?

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• How to read XML from the internet using a Web Proxy?

  - by Mark Allison

  This is a follow-up to this question: How to load XML into a DataTable? I want to read an XML file on the internet into a DataTable. The XML file is here: http://rates.fxcm.com/RatesXML If I do: public DataTable GetCurrentFxPrices(string url) { WebProxy wp = new WebProxy("http://mywebproxy:8080", true); wp.Credentials = CredentialCache.DefaultCredentials; WebClient wc = new WebClient(); wc.Proxy = wp; MemoryStream ms = new MemoryStream(wc.DownloadData(url)); DataSet ds = new DataSet("fxPrices"); ds.ReadXml(ms); DataTable dt = ds.Tables["Rate"]; return dt; } It works fine. I'm struggling with how to use the default proxy set in Internet Explorer. I don't want to hard-code the proxy. I also want the code to work if no proxy is specified in Internet Explorer.

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• DevExpress Reporting Session Issue

  - by LeeHull

  This is pretty complicated so I will explain what is going on. I have created an ASP.NET website for displaying images, the way we use our images is, we have a database table that contains the URL where the images are located, however we recently started moving them from the filesystem, and storing them directly into the database as binary, but since we don't want to break older applications, we currently store them both places till they are all updated. Alright, the website I'm working on, is just a reporting website to display images by a date range, I have created an HTTPHandler to display the image, depending if they exist in the database as binary, if the row is DBNull, I just grab the URL from the other table instead, I just read the image, convert it into a byte[] and write it to the response, so it is interpreted as an image. I have created a page to display the report using DevExpress Reporting, I just query the report, save the dataset into a session, and the report reads the session to bind the report, i also have a picturebox in the report bound to "Handler.ashx?id=ImageID", this is because I am not binding a URL to the image, since it is a byte[] Also since there could be a report with 10000+ images, I am reading the dataset from the session inside the handler and just pulling out the image from the passed in ImageID, I am doing this to prevent connecting to the database each and every row. Now the strange thing is, Report loads fine.. data is loading, I have paging on the devexpress report viewer, it is loading the images fine, however here is the issue. When I print or export, I am not getting any images, I am debugged and found out the Session.Count is 0 when it tries to print or export, which is strange since there is more than just the dataset in the session. I have also added IRequiresSessionState to allow sessions in the handler, but the session count is still 0, I have changing the Handler to an aspx page, same issue. Any ideas or suggestions on logic changes, I'm all ears.. this is a very difficult situation since I have to display the images from database as a string AND byte[] since one can be URL and other be the image bytes, but I also can't slam the database on connection calls each row either. I have also reported the issue to DevExpress and they are clueless as well, since they don't dispose the session in the exporting process.

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• C# .Net file in use issue

  - by Dan

  I'm having an issue opening files that have recently been closed by the .Net framework. Basically, what happens is the following: -Read in an XML file using DataSet.ReadXml() -Make some changes to the data -Write out the XML file using DataSet.WriteXml() -Copy the XML file to a new location using File.Copy -FTP the file using a custom control This sequence can intermittently fail either after the WriteXML or the File.Copy with a file in use exception. I'm guessing it could be the Windows write cache not flushing right away. Can anyone confirm that this could be causing my issue? Any solutions to suggest? Thanks, Dan

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• Informix & .NET

  - by Giuliano

  I'm connecting to Informix 6.5 using the IBM OLE DB Driver. Some clarification: Informix Dynamic Server Workgroup Edition. Please note that there are many versions of IDS/WE - it helps to be precise about which version you have. It might be something like 10.00.TC1; the version number could be as old as 7.xx.TCx, or as new as 11.50.TCx. If your server is not on Windows but on Unix - or is on 64-bit Windows - the letter 'T' would change to 'U' (32-bit Unix) or 'F' (64-bit - Unix or Windows), or even 'H' (a particular HP-UX configuration). When I try to create a dataset using the VS DataSet wizard, after clicking on test connection it tells me 'Base Table not found'? The OLEDB driver is the official one provided by IBM. The problem with the 'Table not found' dialog is that Visual Studio doesn't tell me the table name but only the error! Has anyone else had this problem?

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• Trying to pass Model down to partial, how do I do this?

  - by mrblah

  My action creates a strongly typed viewdata, which is passed to my view. In the view, I pass the Model to the render partial method. public ActionResult Index() { ViewDataForIndex vd = new ViewDataForIndex(); vd.Users = Users.GetAll(); return View(vd); } public class ViewDataForIndex: ViewData { public IList<User> Users {get;set;} } now in the view: <%@ Page Language="C#" MasterPageFile="~/Views/Shared/Site.Master" Inherits="System.Web.Mvc.ViewPage<ViewDataForIndex>" %> <% Html.RenderPartial("~/controls/blah.ascx", ViewData.Model); %> and in blah.ascx: <%@ Control Language="C#" Inherits="System.Web.Mvc.ViewUserControl" %> how do I access my model now? if I wanted to create a strongly typed class for my ViewUserControl, how would I do that? inherit from?

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• Grid View Pagination.

  - by Wondering

  Dear All, I have a grid view and I want to implement Pagination functionality.This is working fine. protected DataSet FillDataSet() { string source = "Database=GridTest;Server=Localhost;Trusted_Connection=yes"; con = new SqlConnection(source); cmd = new SqlCommand("proc_mygrid", con); ds = new DataSet(); da = new SqlDataAdapter(cmd); da.Fill(ds); GridView1.DataSource = ds; GridView1.DataBind(); return ds; } protected void GridView1_PageIndexChanging(object sender, GridViewPageEventArgs e) { int newPagenumber = e.NewPageIndex; GridView1.PageIndex = newPagenumber; GridView1.DataSource = FillDataSet(); GridView1.DataBind(); } But the problem is for each pagination I have to call FillDataSet(); Is there any way to stop that.Any other coding approach? Thanks.

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• C# & Adding Dynamic META Tags

  - by Bry4n

  I have this code protected void Page_Load(object sender, EventArgs e) { DataSet.DestinationsDataTable GetDestinations = (DataSet.DestinationsDataTable)dta.GetData(); Page.Title = GetDestinations.Rows[0]["Meta_Title"].ToString(); HtmlMeta hm = new HtmlMeta(); HtmlHead head = (HtmlHead)Page.Header; hm.Name = GetDestinations.Rows[0]["Meta_Desc"].ToString(); hm.Content = GetDestinations.Rows[0]["Meta_Key"].ToString(); head.Controls.Add(hm); } And it's returning this error (on a content page) The Controls collection cannot be modified because the control contains code blocks (i.e. <% ... %>). Thoughts?

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• Need help in gridview displaying data

  - by sumit

  Hi all, I want to display all the data in gridview which i am inserting in runtime. For that i have written code but getting this error. "Both DataSource and DataSourceID are defined on 'GridView1'. Remove one definition." protected void Page_Load(object sender, EventArgs e) { if (!Page.IsPostBack) { BindData(); } } public void BindData() { string str = ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString.ToString(); SqlConnection con = new SqlConnection(str); SqlDataAdapter da = new SqlDataAdapter("select * from Items where ItemId='" + TxtItemId.Text + "'", con); DataSet ds = new DataSet(); da.Fill(ds,"Items"); GridView1.DataSource = ds; GridView1.DataBind(); } Pls modify my code where is my mistake. Thanks, Sumit

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• solution on SP and EF & Ria Service

  - by KentZhou

  As EF 4.0 released, more support to SQL server Stored procedure. Complex Type can be generated automatically for result dataset of SP. But complex type not support by Ria Service. When I try to use ria service combined with EF 4.0, I want to get dataset by SP. This result is not mapped to any entity/table. Some sulutions suggested by community are: 1. Create view to map sp result. (but for EF, if there is no ID or primary, can't be map to any entity) 2. Create Entity to map sp result.(for this, you even need to map SP for CRUD even though I don't need CUD on this sp result) Also above solution can't be automated. As Database objects maybe changed with the time, auto update edm will lost above solution. So what's the solution? I want to put data operation back to DB as possible, so that many changes can be done in DB and no need to rebuild .net assemblies(this cause redeploy).

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• Class Type Expected error on TableAdapter constructor

  - by Chris Franz

  I am using Delphi Prism to connect to an Advantage Database Server. I created a connection using the server explorer to the database. I added a dataset object to my project and added a table to the dataset. Everything works fine in the IDE, however, I get an error in the generated designer code on the table adapter constructor. The error is: (PE26) Class type expected. Here is the generated code: { Presidents.PresidentsTableAdapters.USPRESIDENTSTableAdapter } constructor Presidents.PresidentsTableAdapters.USPRESIDENTSTableAdapter; begin self.ClearBeforeFill := true; end;

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• how to solve this Problem in asp.net crystal report.

  - by Ayyappan.Anbalagan

  Problem in crystal report After excecuting the bellow code,In my report page it ask like "The report you requested requires further information" server= user= password= databse= protected void Page_Load(object sender, EventArgs e) { MySqlConnection sqlcom = new MySqlConnection("server=localhost;userid=root;password=root;database=hemaepdb;"); MySqlCommand cmd = new MySqlCommand("SP_ViewBillDetails", sqlcom); cmd.CommandType = CommandType.StoredProcedure; cmd.Parameters.Add("p_Invoice_Id", MySqlDbType.Int16).Value = 1; cmd.Parameters.Add("p_Org_id", MySqlDbType.Int16).Value = 1; MySqlDataAdapter adapter = new MySqlDataAdapter(cmd); DataSet dsTest = new DataSet(); sqlcom.Open(); adapter.Fill(dsTest, "Table"); sqlcom.Close(); CrystalReportViewer1.Visible = true; ReportDocument myRpt = new ReportDocument(); myRpt.Load(Server.MapPath("CrystalReport.rpt")); myRpt.SetDatabaseLogon("root", "root", "localhost", "hemaepdb"); myRpt.SetDataSource(dsTest); CrystalReportViewer1.ReportSource = myRpt; }

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• Static Typing and Writing a Simple Matrix Library

  - by duckworthd

  Aye it's been done a million times before, but damnit I want to do it again. I'm writing a simple Matrix Library for C++ with the intention of doing it right. I've come across something that's fairly obvious in mathematics, but not so obvious to a strongly typed system -- the fact that a 1x1 matrix is just a number. To avoid this, I started walking down the hairy path of matrices as a composition of vectors, but also stumbled upon the fact that two vectors multiplied together could either be a number or a dyad, depending on the orientation of the two. My question is, what is the right way to deal with this situation in a strongly typed language like C++ or Java?

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• Converting to Byte Array after reading a BLOB from SQL in C#

  - by Soham

  Hi All, I need to read a BLOB and store it in a byte[], before going forward with Deserializing; Consider: //Reading the Database with DataAdapterInstance.Fill(DataSet); DataTable dt = DataSet.Tables[0]; foreach (DataRow row in dt.Rows) { byte[] BinDate = Byte.Parse(row["Date"].ToString()); // convert successfully to byte[] } I need help in this C# statement, as I am not able to convert an object type into a byte[]. Note, "Date" field in the table is a blob and not of type Date; Help appreciated; Soham

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• C# Memoization of functions with arbitrary number of arguments

  - by Lirik

  I'm trying to create a memoization interface for functions with arbitrary number of arguments, but I'm failing miserably. The first thing I tried is to define an interface for a function which gets memoized automatically upon execution: class EMAFunction:IFunction { Dictionary<List<object>, List<object>> map; class EMAComparer : IEqualityComparer<List<object>> { private int _multiplier = 97; public bool Equals(List<object> a, List<object> b) { List<object> aVals = (List<object>)a[0]; int aPeriod = (int)a[1]; List<object> bVals = (List<object>)b[0]; int bPeriod = (int)b[1]; return (aVals.Count == bVals.Count) && (aPeriod == bPeriod); } public int GetHashCode(List<object> obj) { // Don't compute hash code on null object. if (obj == null) { return 0; } // Get length. int length = obj.Count; List<object> vals = (List<object>) obj[0]; int period = (int) obj[1]; return (_multiplier * vals.GetHashCode() * period.GetHashCode()) + length;; } } public EMAFunction() { NumParams = 2; Name = "EMA"; map = new Dictionary<List<object>, List<object>>(new EMAComparer()); } #region IFunction Members public int NumParams { get; set; } public string Name { get; set; } public object Execute(List<object> parameters) { if (parameters.Count != NumParams) throw new ArgumentException("The num params doesn't match!"); if (!map.ContainsKey(parameters)) { //map.Add(parameters, List<double> values = new List<double>(); List<object> asObj = (List<object>)parameters[0]; foreach (object val in asObj) { values.Add((double)val); } int period = (int)parameters[1]; asObj.Clear(); List<double> ema = TechFunctions.ExponentialMovingAverage(values, period); foreach (double val in ema) { asObj.Add(val); } map.Add(parameters, asObj); } return map[parameters]; } public void ClearMap() { map.Clear(); } #endregion } Here are my tests of the function: private void MemoizeTest() { DataSet dataSet = DataLoader.LoadData(DataLoader.DataSource.FROM_WEB, 1024); List<String> labels = dataSet.DataLabels; Stopwatch sw = new Stopwatch(); IFunction emaFunc = new EMAFunction(); List<object> parameters = new List<object>(); int numRuns = 1000; long sumTicks = 0; parameters.Add(dataSet.GetValues("open")); parameters.Add(12); // First call for(int i = 0; i < numRuns; ++i) { emaFunc.ClearMap();// remove any memoization mappings sw.Start(); emaFunc.Execute(parameters); sw.Stop(); sumTicks += sw.ElapsedTicks; } Console.WriteLine("Average ticks not-memoized " + (sumTicks/numRuns)); sumTicks = 0; // Repeat call for (int i = 0; i < numRuns; ++i) { sw.Start(); emaFunc.Execute(parameters); sw.Stop(); sumTicks += sw.ElapsedTicks; } Console.WriteLine("Average ticks memoized " + (sumTicks/numRuns)); } The performance is confusing me... I expected the memoized function to be faster, but it didn't work out that way: Average ticks not-memoized 106,182 Average ticks memoized 198,854 I tried doubling the data instances to 2048, but the results were about the same: Average ticks not-memoized 232,579 Average ticks memoized 446,280 I did notice that it was correctly finding the parameters in the map and it going directly to the map, but the performance was still slow... I'm either open for troubleshooting help with this example, or if you have a better solution to the problem then please let me know what it is.

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• Call server side method from JSON

  - by Zerotoinfinite

  How to call a method on a server side from JSON. Below is the code I am using SERVER SIDE: [WebMethod] private void GetCustomer( string NoOfRecords) { string connString = "Data Source=Something;Initial Catalog=AdventureWorks;Trusted_Connection=True;"; SqlConnection sCon = new SqlConnection(connString); SqlDataAdapter da = new SqlDataAdapter("SELECT * FROM Sales.Customer WHERE CustomerID < '" + NoOfRecords+ "' ", sCon); DataSet ds = new DataSet(); da.Fill(ds); GvDetails.DataSource = ds.Tables[0]; GvDetails.DataBind(); } On Client Side: var txtID = document.getElementById('txtValue'); $.ajax({ type: "POST", url: "Default.aspx/GetCustomer", data: "{Seconds:'" + txtID +"'}", contentType: "application/json; charset=utf-8", dataType: "json", success: function(response) { alert(response); } }); Now I want that on button click, I would call the function at the client side [JSON], which pass the textbox value to the function. Please help

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• SqlCommand asp.net C#

  - by emilios

  i you please help me out with my problem i am trying to create a function that output the data on a dropdownlist an setting my parameters my code goes as follow : public static List<string> GetTracks(out List<string> trackIds, string conferenceId) { var res = new List<string>(); trackIds = new List<string>(); var sqlCon = new SqlConnection(System.Configuration.ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString); SqlCommand cmd = new SqlCommand("select Track_name,Track_ID from TrackCommittee where Conference_id= @conferenceId", sqlCon); DataSet ds = new DataSet(); cmd.Connection.Open(); cmd.Parameters.Add(new SqlParameter("@conferenceId", conferenceId)); using (SqlDataReader sdr = cmd.ExecuteReader()) { while (sdr.Read()) { res.Add(sdr.GetString(sdr.GetOrdinal("Track_name"))); trackIds.Add(sdr.GetInt32(sdr.GetOrdinal("Track_ID")).ToString()); } } cmd.Connection.Close(); cmd.Dispose(); return res; } thanking you in advance

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• Create Sum of calculated rows in Microsoft Reporting Services

  - by kd7iwp

  This seems like it should be simple but I can't find anything yet. In Reporting Services I have a table with up to 6 rows that all have calculated values and dynamic visibility. I would like to sum these rows. Basically I have a number of invoice items and want to make a total. I can't change anything on the DB side since my stored procedures are used elsewhere in the system. Each row pulls data from a different dataset as well, so I can't do a sum of the dataset. Can I sum all the rows with a table footer? Similarly to totaling a number of rows in Excel? It seems very redundant to put my visibility expression from each row into my footer row to calculate the sum.

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• How do I catch generic fault exceptions in Fitnesse?

  - by Dan Ryan

  Previously within my Fitnesse fixture I was specifying an expected WCF exception using: exception[FaultException] Since then I have converted the WCF service to return a strongly typed FaultContract. I am now getting the following failure message: exception[FaultException`1: "A file with the name DMS Documents/testFileWord.doc already exists. It was last modified by SHAREPOINT\system on 09 Mar 2010 15:36:14 -0000."] This is not unexpected but how do I check for strongly typed fault exceptions? Please note I cannot include the fault message as part of the check as it contains a date which changes (I check this separately).

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• Delphi Clientdataset Lookup/Aggregate

  - by TheRoadrunner

  Hi, I need a little help with ClientDatasets in Delphi. What I want to achieve is a grid showing customers, where one of the columns shows the number of orders for each customer. I put a ClientDataset on a form and load Customers.xml from Delphi demo-data. Another ClienDataset is loaded with orders.xml. Relatively simple, I can define an aggregate on the orders CDS showing the total amount per customer (or the count). (See Cary Jensens article on this: http://edn.embarcadero.com/article/29272) The problem is getting this aggregate result from orders dataset into the customer dataset. It is kind of an reverse lookup, since there is a 1-n relationship between customers and orders, not an n-1 as normally in lookup scenarios. Any ideas ? Søren

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• Retrieving XML node from a path specified in an attribute value of another node

  - by Olivier PAYEN

  From this XML source : <?xml version="1.0" encoding="utf-8" ?> <ROOT> <STRUCT> <COL order="1" nodeName="FOO/BAR" colName="Foo Bar" /> <COL order="2" nodeName="FIZZ" colName="Fizz" /> </STRUCT> <DATASET> <DATA> <FIZZ>testFizz</FIZZ> <FOO> <BAR>testBar</BAR> <LIB>testLib</LIB> </FOO> </DATA> <DATA> <FIZZ>testFizz2</FIZZ> <FOO> <BAR>testBar2</BAR> <LIB>testLib2</LIB> </FOO> </DATA> </DATASET> </ROOT> I want to generate this HTML : <html> <head> <title>Test</title> </head> <body> <table border="1"> <tr> <td>Foo Bar</td> <td>Fizz</td> </tr> <tr> <td>testBar</td> <td>testFizz</td> </tr> <tr> <td>testBar2</td> <td>testFizz2</td> </tr> </table> </body> </html> Here is the XSLT I currently have : <?xml version="1.0" encoding="utf-8"?> <xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:msxsl="urn:schemas-microsoft-com:xslt" exclude-result-prefixes="msxsl"> <xsl:output method="html" indent="yes"/> <xsl:template match="/ROOT"> <html> <head> <title>Test</title> </head> <body> <table border="1"> <tr> <!--Generate the table header--> <xsl:apply-templates select="STRUCT/COL"> <xsl:sort data-type="number" select="@order"/> </xsl:apply-templates> </tr> <xsl:apply-templates select="DATASET/DATA" /> </table> </body> </html> </xsl:template> <xsl:template match="COL"> <!--Template for generating the table header--> <td> <xsl:value-of select="@colName"/> </td> </xsl:template> <xsl:template match="DATA"> <xsl:variable name="pos" select="position()" /> <tr> <xsl:for-each select="/ROOT/STRUCT/COL"> <xsl:sort data-type="number" select="@order"/> <xsl:variable name="elementName" select="@nodeName" /> <td> <xsl:value-of select="/ROOT/DATASET/DATA[$pos]/*[name() = $elementName]" /> </td> </xsl:for-each> </tr> </xsl:template> </xsl:stylesheet> It almost works, the problem I have is to retrieve the correct DATA node from the path specified in the "nodeName" attribute value of the STRUCT block.

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• Problem with Sphinx resultset larger than 16 MB in MySQL

  - by gmemon

  Hello All, I am accessing a large indexed text dataset using sphinxse via MySQL. The size of resultset is on the order of gigabytes. However, I have noticed that MySQL stops the query with following error whenever the dataset is larger than 16MB: 1430 (HY000): There was a problem processing the query on the foreign data source. Data source error: bad searchd response length (length=16777523) length shows the length of resultset that offended MySQL. I have tried the same query with Sphinx's standalone search program. It works fine. I have tried all possible variables in both MySQL and Sphinx, but nothing is helping. I am using Sphinx 0.9.9 rc-2 and MySQL 5.1.46. Thanks

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• Does a C# using statement perform try/finally?

  - by Lirik

  Suppose that I have the following code: private void UpdateDB(QuoteDataSet dataSet, Strint tableName) { using(SQLiteConnection conn = new SQLiteConnection(_connectionString)) { conn.Open(); using (SQLiteTransaction transaction = conn.BeginTransaction()) { using (SQLiteCommand cmd = new SQLiteCommand("SELECT * FROM " + tableName, conn)) { using (SQLiteDataAdapter sqliteAdapter = new SQLiteDataAdapter()) { sqliteAdapter.Update(dataSet, tableName); } } transaction.Commit(); } } } The C# documentation states that with a using statement the object within the scope will be disposed and I've seen several places where it's suggested that we don't need to use try/finally clause. I usually surround my connections with a try/finally, and I always close the connection in the finally clause. Given the above code, is it reasonable to assume that the connection will be closed if there is an exception?

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• ora-00939 error in reporting services, SSRS

  - by san

  Hi, I have an SSRS report , Oracle is my backend and am using this following query for dataset of my second parameter. select distinct X from v_stf_sec_user_staffing_center usc where usc.center_group_id in ( select distinct center_group_id from V_T_STAFFING_CENTER_GROUP scg where INSTR(','||REPLACE(:PI_REGION_LIST,' ')||',', ','||scg.group_abbreviation||',') 0) and usc.nt_user_name=:PI_NT_USER_NAME Here PI_REGION_LIST is a multivalued parameter of string type. and PI_NT_USER_NAME is a default string valued parameter this query works fine when i try to execute in manulally in the Data tab , also in the Oracle tool. But when i run the report in SSRS and select more than 3 values for the parameter PI_REGION_LIST the report throws an error on this dataset, ora-00939 error,too many arguments for function. I am not able to figure out the error here. Please help me with an idea. Thanks in advance, Suni.

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• Setting UIActivityIndicatorView while view is prepared

  - by iFloh

  Hi, I have a UITabbBarController with a UITableView. Under certain circumstances the TabBarControllers dataset requires updating when a user arrives from another view, e.g. the initial load when the TabBarController is called the first time, or when the settings are changed. This dataset update takes about 2 seconds and I want to show an UIActivityIndicatorView. Trouble is that when I enter from another view I don't know which view to attach it to, since the loading of the tabbarController is carried out in the viewWillAppear method. Any clues how I can go about this?

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