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  • Some Problem In Using DataSet.ReadXML

    - by Chong
    hi friends, i want to use dataset.readxml for retrieve some data from xml file.But,my xml format is not well format,one part is for dataset and another part for other things.so,how i retrieve the dataset part.i am developing in c#.net 2008.xml file format is like below. <Object type="Sample"> <Object type="Tool"> <Property name="Text">Prescription1</Property> <Property name="Name">Prescription1</Property> <Object type="TextBox"> <Property name="Text">Singapore</Property> <Property name="Name">TextBox2</Property> </Object> <DataSet> //This Part <TableOne> <ItemID>001</ItemID> <ItemName>Item001</ItemName> <Price>100</Price> </TableOne> <TableOne> <ItemID>002</ItemID> <ItemName>Item002</ItemName> <Price>200</Price> </TableOne> </DataSet> </Object> regards Chong

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  • Draw chart for every row of the dataset in SSRS. Loop through dataset rows

    - by Rushme
    Hi, Could anyone help me with how can we create chart for every row of the dataset in SSRS (rdl) ! Suppose the dataset has the following data Name Age ------- ------- A 25 B 26 C 22 3 chart needs to be drawn for the x-axis/y-axis combination of A/25, B/26, C/22. How can I loop through rows of the dataset. And how can I restrict the chart to that particular data point. What would be the xsl expression corresponding to this functionality.

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  • Use LINQ to insert data from dataset to SQL

    - by Mayo
    Let's say I have a dataset in an ASP.NET website (.NET 3.5) with 5 tables, each has roughly 30,000 rows and an average of 12 columns. I want to insert all of the data from the dataset into 5 very-similar-but-not-quite-identical tables in SQL Server 2008. I also want to use LINQ (personal preference - trying to learn something new). Is it as simple as iterating through the dataset and, for each row, creating a new instance of the associated class, initializing its data with the dataset's row, adding it to the data model, and then doing one giant SubmitChanges at the end? Are there better ways of doing this with LINQ? Or is this the de-facto standard?

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  • Backup and Restore a SQLCE .sdf database

    - by Ruben Trancoso
    My application needs to backup and restore .sdf files. There is a single dataSet the the whole application and some bindngSource and table adapters on forms using this same dataset. Just for a sake of test I tryied to copy the .sdf in runtime for a backup folder and back to restore it and I got my application not finding the file like it was not there anymore. How should I manage connections to open and close the database since the dataSet do it automaticaly at begin and end of my application?

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  • Reading DBF with VFPOLEDB driver problem.

    - by John Sheares
    I am using VFPOLEDB driver to read DBF files and I keep getting this error and I am not sure why and how to fix the problem: The provider could not determine the Decimal value. For example, the row was just created, the default for the Decimal column was not available, and the consumer had not yet set a new Decimal value. Here is the code. I call this routine to return a DataSet of the DBF file and display the data in a DataGridView. public DataSet GetDBFData(FileInfo fi, string tbl) { using (OleDbConnection conn = new OleDbConnection( @"Provider=VFPOLEDB.1;Data Source=" + fi.DirectoryName + ";")) { conn.Open(); string command = "SELECT * FROM " + tbl; OleDbDataAdapter da = new OleDbDataAdapter(command, conn); DataSet ds = new DataSet(); da.Fill(ds); return ds; } }

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  • Binding Programatically Generated Datasets To Report Viewer

    - by mavera
    Today I researched about reportviewer to use it in my project. As I see the samples and tutorials in the web, We should create an dataset file to Solution Explorer and bind it to report viewer to show data. However I want to create dataset programatically like sample code below. And I want to bind it. Dim ds As New DataSet DB_Gateway.myDataSet("select * from users", ds, "users") How can I do it?

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  • Dynamic typed language example using ANTLR

    - by wvd
    Hey all, I'm looking for some ANTLR examples, I tried googling a bit but I found certain things which didn't fit my requirments. I found the Mantra project, but it's statically typed and is 'too' big for me at this moment, then I found 'pie' as interpreter, which is dynamically typed, which what I want, but it uses a syntax-directed interpreter. I'm looking for a pretty small language which is dynamically typed and uses AST's if possible. It doesn't need to be advanced, if it would have classes I would already be very happy. Thanks, William van Doorn

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  • How to do binding programmically?

    - by user175908
    Hello, Could anyone identify the problem in this code? (I'm kinda newbie in WPF bindings.) This code executes after chart is loaded when I click a button: I get this error: Update: I dont get that error anymore. Thanks to Tomas. Now no error occur but chart looks completely blank (no columns) Update: Code now looks like this: // create a very simple DataSet var dataSet = new DataSet("MyDataSet"); var table = dataSet.Tables.Add("MyTable"); table.Columns.Add("Name"); table.Columns.Add("Price"); table.Rows.Add("Brick", 1.5d); table.Rows.Add("Soap", 4.99d); table.Rows.Add("Comic Book", 0.99d); // chart series var series = new ColumnSeries() { IndependentValueBinding = new Binding("[Name]"), // How to deal with DependentValueBinding = new Binding("[Price]"), // these two? ItemsSource = dataSet.Tables[0].DefaultView // or maybe I do mistake here? }; // ---------- set additional binding as adviced ------------------ series.SetBinding(ColumnSeries.ItemsSourceProperty, new Binding()); // chart stuff MyChart.Series.Add(series); MyChart.Title = "Names 'n Prices"; // some code to remove legend var style = new Style(typeof(Control)); style.Setters.Add(new Setter(LegendItem.TemplateProperty, null)); MyChart.LegendStyle = style; XAML: <Window x:Class="BindingzTest.MainWindow" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="MainWindow" Height="606" Width="988" xmlns:charting="clr-namespace:System.Windows.Controls.DataVisualization.Charting;assembly=System.Windows.Controls.DataVisualization.Toolkit"> <Grid Name="LayoutRoot"> <charting:Chart Name="MyChart" Margin="0,0,573,0" Height="289" VerticalAlignment="Top" /> <Button Content="Button" Height="23" HorizontalAlignment="Left" Margin="272,361,0,0" Name="button1" VerticalAlignment="Top" Width="75" Click="chart1_Loaded" /> </Grid> Thanks for help in advance once more.

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  • Run SQL Queries on DataTables, or similar, in .Net, without an RDBMS

    - by FastAl
    I'd like to have a dataset or datatables, and be able to run SQL statements on them, without using any external RDBMS. For Example, to take take 2 datatables in a dataset and just join them outright with a SQL statement and Where clause, the result being a new datatable? For example if I have 2 datatables, named People and Addresses in a dataset (that I built using code, not getting from a database .. pardon the old fashioned Join syntax): dim dtJoined as DataTable = MyDataSet.RunSQLQuery ("Select * from People, Orders Where People.PersonID=Orders.OrdereID") Thanks

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  • Shortcut key to skip cursor from left/right of every typed word

    - by user176368
    I want to know if it is even possible to jump my cursor from left/right of every typed word using Vimperator, a Firefox addon that behaves like Vim, including its shortcut keys. So a good example would be: I took a marvelous dump right before bed and I so happen to sleep better.- Now if my cursor is at the end of that sentence (hence the dash) how can I jump my cursor right before the word better by just using a shortcut key? by default Ctrl+A & Ctrl+E are shortcut keys that brings your cursor to beginning/end of the current line your on.

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  • Save data typed into PDF Form [closed]

    - by mnh
    Hey I have PDF Form which would not let me save the data typed into it. Here is the form: http://www.cic.gc.ca/english/pdf/kits/forms/imm0008egen.pdf I want it to save the data typed into it so that I can email it to my relative. Any ideas? I'm using Acrobat Reader.

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  • Which languages are dynamically typed and compiled (and which are statically typed and interpreted)?

    - by Skilldrick
    In my reading on dynamic and static typing, I keep coming up against the assumption that statically typed languages are compiled, while dynamically typed languages are interpreted. I know that in general this is true, but I'm interested in the exceptions. I'd really like someone to not only give some examples of these exceptions, but try to explain why it was decided that these languages should work in this way.

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  • ASP.NET MVC validation in weakly typed views

    - by Eedoh
    Hello. I have a problem validating data on view that is not strongly typed. I'm updating data from 3 different models on that view, and I have validation methods that work on them, but I don't know how to display the validation message. Where should I put validation messages (on strongly typed views I put them in ModelState, I presume that does not make sense in this case), and how should I display them (I doubt that I will be able to use "validationmessagefor", maybe "validationmessage" somehow)?

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  • Typed metaprogramming languages

    - by Jacques Carette
    I want to do some metaprogramming in a statically typed language, where both my programs and my meta-programs will be typed. I mean this in a strong sense: if my program generator compiles, I want the type system to be strong enough that only type-correct programs can be generated. As far as I know, only metaocaml can do this. (No, neither Template Haskell nor C++ templates fit the bill -- see this paper).

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  • Why is "int + string" possible in statically-typed C# but not in dynamically-typed Python?

    - by Salvador Dali
    While studying C# I found it really strange, that dynamically typed Python will rise an error in the following code: i = 5 print i + " " whereas statically typed C# will normally proceed the similar code: int i = 5; Console.Write(i + " "); I would expect other way around (in python I would be able to do this without any casting, but C# would require me to cast int to string or string to int). Just to highlight, I am not asking what language is better, I am curious what was the reason behind implementing the language this way.

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  • How update DB table with DataSet

    - by Paul
    I am begginer with ADO.NET , I try update table with DataSet. O client side I have dataset with one table. I send this dataset on service side (it is ASP.NET Web Service). On Service side I try update table in database, but it dont 't work. public bool Update(DataSet ds) { SqlConnection conn = null; SqlDataAdapter da = null; SqlCommand cmd = null; try { string sql = "UPDATE * FROM Tab1"; string connStr = WebConfigurationManager.ConnectionStrings["Employees"].ConnectionString; conn = new SqlConnection(connStr); conn.Open(); cmd=new SqlCommand(sql,conn); da = new SqlDataAdapter(sql, conn); da.UpdateCommand = cmd; da.Update(ds.Tables[0]); return true; } catch (Exception ex) { throw ex; } finally { if (conn != null) conn.Close(); if (da != null) da.Dispose(); } } Where can be problem?

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  • transaction handling in dataset based insert/update in c#

    - by user3703611
    I am trying to insert bulk records in a sql server database table using dataset. But i am unable to do transaction handling. Please help me to apply transaction handling in below code. I am using adapter.UpdateCommand.Transaction = trans; but this line give me an error of Object reference not set to an instance of an object. Code: string ConnectionString = "server=localhost\\sqlexpress;database=WindowsApp;Integrated Security=SSPI;"; SqlConnection conn = new SqlConnection(ConnectionString); conn.Open(); SqlTransaction trans = conn.BeginTransaction(IsolationLevel.Serializable); SqlDataAdapter adapter = new SqlDataAdapter("SELECT * FROM Test ORDER BY Id", conn); SqlCommandBuilder builder = new SqlCommandBuilder(adapter); adapter.UpdateCommand.Transaction = trans; // Create a dataset object DataSet ds = new DataSet("TestSet"); adapter.Fill(ds, "Test"); // Create a data table object and add a new row DataTable TestTable = ds.Tables["Test"]; for (int i=1;i<=50;i++) { DataRow row = TestTable.NewRow(); row["Id"] = i; TestTable .Rows.Add(row); } // Update data adapter adapter.Update(ds, "Test"); trans.Commit(); conn.Close();

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  • JSON.NET "System.OutOfMemoryException" when deserializing into a DataSet

    - by Tiago
    Very new to C# and JSON. I have been struggling with this problem for about a day and can't figure it out. JSONLint states both JSON strings are valid. Trying to deserialize the following {"items":[{"id":"1122267","quantity":"1","bundle":"1"}],"seconds_ago":"1"} throws the exception An unhandled exception of type 'System.OutOfMemoryException' occurred in Newtonsoft.Json.dll If I try {"items":[{"id":"1122267","quantity":"1","bundle":"1"}]} it works. I'm reading the JSON string from a textbox and then deserializing using the following string json = textBox1.Text; DataSet dataSet = JsonConvert.DeserializeObject<DataSet>(json);

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  • ASP.NET MVC Strongly Typed Widgets

    - by Ben
    I have developed a plugin system that makes it easy to plug in new logic to an application. Now I need to provide the ability to easily add UI widgets. There are already some good responses on how to create a portal system (like iGoogle) with ASP.NET MVC, and I'm fine about the overall concept. My question is really about how we make strongly typed widgets. Essentially when we set up a widget we define the controller and action names that are used to render that widget. We can use one controller action for widgets that are not strongly typed (since we just return PartialView(widgetControlName) without a model) For widgets that are strongly typed (for example to an IList) we would need to add a new controller action (since I believe it is not possible to use Generics with ActionResult e.g. ActionResult). The important thing is that the widget developers should not change the main application controllers. So my two thoughts are this: Create new controllers in a separate class library Create one partial WidgetController in the main web project and then extend this in other projects (is this even possible?) - not possible as per @mfeingold As far as the development of the widgets (user controls) go, we can just use post build events from our extension projects to copy these into the Views/Widgets directory. Is this a good approach. I am interested to here how others have handled this scenario. Thanks Ben P.S - in case it helps, an example of how we can render widgets - without using Javascript <%foreach (var widget in Model) {%> <%if (widget.IsStronglyTyped) { Html.RenderAction(widget.Action, widget.Controller); } else { Html.RenderPartial(widget.ControlName); } %> <%} %>

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