I am getting this error whilie bulding project. i simply has defined a datatable accessing its rows and columns. don't knw why it says Columns is not a member of 'DataTable.
Error 66 'Columns' is not a member of 'DataTable'. E:DOI1TableReports.aspx.vb 342
Error 65 'Rows' is not a member of 'DataTable'. E:DOI1TableReports.aspx.vb 297
Error 73 'NewRow' is not a member of 'DataTable'. E:DOI1TableReports.aspx.vb 410
I have a datatable with 17 columns and a bunch of data. I wnat a datatable with only 6 of the columns and the data for those 6 columns. So I need a subset of the original datatable. How do I loop through the original datatable with 17 columns and end up with a datatable with only the 6 columns I want with the corresponding data for those 6 columns?
I have two member roles at my project: 1.) Administrator 2.) Member
From the toolbox in Visual Studio 2008, I have dragged and dropped the create user wizard into the stage. I aim that a guest can register itself and automatically join the "member" role. Not the role "administrator". How can I do that?
public class WebModel { public List<ArticleModel> Articles { get; set; } } public class ArticleModel { public int ID { get; set; } public double ValueParam { get; set; } }
Then I have the controller with the two actions:
[Authorize] public ActionResult Index() { WebModel model = new WebModel(); ModelConverter.ConvertToModel(model, controller); return View(model); } [Authorize] [HttpPost] [ValidateInput(false)] public ActionResult Index(WebModel model, string saveButton) { ModelValidation.ValidateWebModel(model, ModelState); if (ModelState.IsValid) { return RedirectToAction("Create", "Article"); } ModelConverter.ConvertToModel(model, controller); return View(model); }
If I press the submit button, I get to the second action method in the controller (the one with the HttpPost attribute). In this action, the object model itself is not null, but the "Articles" list inside is null.
i want to make a datagrid with 2 columns and many rows the columns i want to have databinding with a datatable
i want the 1 row 1 column of datagrid have data from 1 row of datatable i want the 1 row 2 column of datagrid have data from 2 row of datatable i want the 2 row 1 column of datagrid have data from 3 row of datatable i want the 2 row 2 column of datagrid have data from 4 row of datatable ...... ......
i use something like this
[code]...
but i have two times the same in tha datagrid left and right
Im trying to retrieve a datatable that I put into a session variable, however when i do it apears that there are no columns... I have done this before in VB.NET, I'n now using C#, and it worked perfectly, and as far as i can see there is no change in the code other than the obvious syntax changes.
EDIT: The dt (in part 2) variable has the right data when i look in the data visulization window, but i have noticed that the other properties associated with a datatable are abscent. When i hover over a normal looking datatable with my mouse it looks like the following: " dt ----- {System.Data.DataTable}" but in the class im working on it just looks like "dt ----- {}". Also, after I return the session variable into the dt I clone it (dtclone = dt.clone(); ) and the clone is empty in the data visulizer.... what on earth!
EDIT 2: I have now also tried converting the first datatable to a dataset, putting this in the session variable, and recoverting it back to a datatable in the class. Am starting to wonder if it is a probelm with: dt.Load(sqlReader); The data does appear after this step though in the dataset visualiser, but not after being cloned. Code below.
1) SQL command in a webhandler, the results of which populate the datatable to be put into the session variable.
DataTable dt = new DataTable(); SqlDataReader sqlReader= default(SqlDataReader); SqlDataAdapter sqlAdapter = new SqlDataAdapter(); sqlReader = storedProc.ExecuteReader(CommandBehavior.CloseConnection); dt.Load(sqlReader); System.Web.HttpContext.Current.Session["ResultsTable"] = dt;
2) Part of the code in a class which performs calculations on the table:
I would like to bind 'Id', 'Name' and 'Email' from DataTable to RadComboBox. It's possible with ItemTemplate. But I don't want to display 'Email' column in the RadComboBox. I want display 'Email' in the label when the selectedIndexChanged. Is this possible?
I've built a User Control that contains a ListView. To make it work I need to pass to it a DataTable. The columns of this DataTable need to have particular names that match up with what the ListView is expecting. I have a large DataTable that I need to massage/convert over to this different format. To do that I need to filter out columns and rename the column names. The actual data in the DataTable doesn't need to change. Is there a good way to do this without actually instantiating a new DataTable and copying the data from the large DataTable into it?
HOW TO specify which columns are in a DataView from a DataTable. I want to create a DataView, that only has the columns from a DataTable that I choose, and in the order I want.
Example: // DataTable_MyTable ~~ Column #0 is for ID. I do not want my view to get this column. // DataTable_MyTable ~~ Column #1 is for TYPE. I want this column to come in 2nd place in my view. // DataTable_MyTable ~~ Column #2 is for NAME. I want this column to com in 1st place in my view.
DataView DataView_MyView = new DataView(DataTable_MyTable ~~ some how only get the columns I want, and in the order I want ~~);
// DataView_MyView now has only 2 columns. // DataView_MyView ~~ Column #0 is NAME. // DataView_MyView ~~ Column #1 is TYPE.
I am having problem with calculated columns in the following code
[Code]....
orderDT is the DataTable. When "Extra" column has nothing (I am NOT using Default), "Total" comes out to be blank? "Price" will have a value (always) "Extra" may not have any value
Stack-Overflow :3 I've got a kind of hard-case question.
So I'll try clearly explain my idea with my poor english :/ need select to DataTable SOME values from ???_**GetDisplayData **procedure for each day of previos month (GROUP IT) where group rules for different columns is different
I need to select some values in stored procedure from other stored procedure like this :
SELECT X FROM Y_Procedure(@ProcedureParameters)Also I need to select from dynamic SQL Procedure like
Y_Procedure=@Y+'_Procedure' SELECT X FROM Y_Procedure(@ProcedureParameters)
Also I need to load it to DataTable :-/INSERT INTO @Report (CellHorizontal, CellVertical, CellValue) --to TABLE SELECT Date,X2,X3 FROM Y_GetDisplayData(@Param)
SET NOCOUNT OFF; SELECT * FROM @Report
GetDisplayData works as select with parameters and that doesn't returns SQL DataTable And there is no way to recode GetDisplayData's procedures, it's just constant procedures for me.Finally I need to Group nodes from this table
INSERT INTO @Report (CellHorizontal, CellVertical, CellValue) SELECT T1.Date, IF ((Select grouptype...)=1) T1.X2 + T2.X2 ELSE IF ((Select grouptype...)=2) AVG(T1.X2,T2.X2), IF ((Select grouptype...)=1) T1.X3 + T2.X3 ELSE IF ((Select grouptype...)=2) AVG(T1.X3,T2.X3), (SELECT T2.Date,X2,X3 FROM Y_GetDisplayData(@Param) T2 WHERE T2.Date>T1.Date AND T2.Date>=T1.Date) FROM Y_GetDisplayData(@Param) T1 GROUP BY EVERY DAY ???--and here is epic fail
I can make all stuff on asp server :And C# allows me to use something like SelectCommand = IzmProc + "_GetDisplayData"; And then I will work (select special data) with DataTables on ASP.NET Server but it's better to make all on SQL ... But looking like it's just unrealizable on SQL >_<
I gonna think about C# realization,but my code is very weird , got errors and doesn't works >_<
I'm looking for the best way (Performance) to do gridview columns formating RunTime /Dynamic depending on the datatable Columns type ,I want to bind the datatable to a gridview and format the Date columns to short date, and currency columns formatted with comma ex 10,000.00 inplace 100000.00 at datatable the column type is double run time (without converting them to String) since I do a filtering and sorting at these columns.
How to fetch data in gridview and add newly added item column in same column? As I know fetch data in gridview, my prob is add new data in new column in gridview.
I'm trying to create a member section for my website and a non member section. I want the nonmember pages to have access to all the member pages but just not certain features like saving to the database. Is there a way to have the same page for both members and non members but have certain controls like buttons and other things that are only usable to the member that is logged in?
I'm working on this big project in MVC ASP.NET w VB.NETOne of my views is getting me headaches since a few and i'm not sure what's up.I've used the Begin.Form and Html.Encode methods alot in my other views and i never had any problems. Now this new Create.aspx view for one of my object called Automation is giving me multiple build errors such as those cited in the title plus
Error 184 'Context' is not a member of 'ASP.views_automatisation_create_aspx'. BeginForm is not a member of 'Html' Encode is not a member of HTML
My header is as follow (just like all of my other working views headers) : \ <%@ Page Title="" Language="VB" MasterPageFile="~/Views/Shared/Site.Master" Inherits="System.Web.Mvc.ViewPage(Of XXXXX_XXXXX.Automatisation)" %>
