Controls :: How To Add And Remove Columns In Datatable
Feb 25, 2016I want to add and remove columns on specific conditions. how it's possible.
Alert: Add and remove not Hide and show...
Similar Messages:
ADO.NET :: Find Rows In One DataTable From Another DataTable And Remove Them
Sep 9, 2010I have a DataTable of available time slots. I have another DataTable of reserved time slots. I need to remove from the list of available slots the ones that have been reserved. The blocks are in 15 minute increments, but one of my problems is that the reservation can be longer than 15 minutes. I've had some luck removing one or two, but not all of the required columns.
Here's my code (it doesn't work right now).
[Code]....
DataSource Controls :: Remove / Hide Duplicate Value In Datatable?
Feb 23, 2010how can i only display the name columne once in the repeater, when more than 1, then hidden the label
now my table are:
name col. age
mary 11
mary 16
Sam 18
now i would like to hidden the duplicate name as below:
name col age
mary 11
16
Sam 18
how can i manage the datatable to prevent duplicate name to bind to repeater.
Forms Data Controls :: Filter The Columns Of A DataTable?
Aug 2, 2010I'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?
View 14 RepliesForms Data Controls :: Specify Which Columns Are In A DataView From A DataTable?
Mar 24, 2010HOW 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.
Forms Data Controls :: How To Add Remove Button Under The Columns To Pivoted Table
Dec 3, 2010I pivoted my gridview with this code. But This code is not mine. Just tested and worked. But i dont know how can i add remove/add buttons to all columns.
[Code]....
Data Controls :: Remove Blank Or Empty Cells In GridView Columns
Jul 5, 2013My gridview look like this,
Play Download SongName Date
button button 5/4/08
button button dala.mp3
button button gaima.mp3
*button - play button and download button,
Now I need to remove the space in the first row, i.e my grid view should look like
Play Download SongName Date
button button dala.mp3 5/4/08
button button gaima.mp3
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button button imasla.mp3
DataSource Controls :: Selecting Columns From A Datatable Using Select Method?
May 7, 2010I would like to select some columns from a Datatable, I mean, something like Select Name, Surname, ID,
I'm trying to do something like this:
DataTable dtExcel = new DataTable();
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in order to get only a view or table with one column (NAME).
C# - How To Copy Only The Columns In A DataTable To Another DataTable
Jun 1, 2010how to copy only the columns in a DataTable to another DataTable?
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Jul 2, 2010I 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?
View 4 RepliesForms Data Controls :: How To Remove Auto Generated Columns Of Gridview At Run Time
Mar 2, 2011i am using asp.net 4.0
i want to remove Auto Genrated Columns of Gridview at Run Time and change the header text of these columns.
[Code]....
Forms Data Controls :: Remove Multiple Gridview Columns Before Excel Export?
Mar 29, 2011I'm trying to find a code to delete multiple columns because when you delete a column the next column takes his place so for example:
If you delete column 6 then column 7 becomes column six.
I tried the following code with an for loop & a while loop:
Dim field As DataControlField = gv.Columns(i)
gv.Columns.Remove(field)
&
gv.columns.removeat(i)
But same case that the column 7 becomes column 6
The variable removeColumns is an array with the column number that need to be deleted.
If wanted I can also provide the Header Names
[Code]....
DataSource Controls :: Refer To Datatable Columns With Database Column Names?
May 28, 2010[Code]....
Refer to datatable columns with database column names?
Forms Data Controls :: Assign HeaderText Of Gridview Columns From Datatable
Jan 7, 2010Actually i want that HeaderText of gridview should be as column name of datatable, which i assign to that perticular column of gridview.
I have templatefield in that column and AutoGeneratedColumn is false
DataSource Controls :: Get Common Columns From Two Intersecting Datatable Inside Dataset?
Mar 18, 2010How can I get common columns from two intersecting datatable inside dataset?
View 2 RepliesC# - How To Remove A Certain Row From DataTable
May 16, 2010How do i achieve simple sql query like
delete from Users where userCity='Munich'
with DataTables ?
p.s. without using Linq or something like that simply because i do not use it though project.
DataSource Controls :: DataTable Calculated Columns - "Total" Comes Out Blank
May 14, 2010I 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
ADO.NET :: Columns Are Not A Member Of DataTable
Feb 17, 2011I 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
Forms Data Controls :: Binding The Datatable To A Gridview And Format The Date Columns To Short Date?
Jan 27, 2010I'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.
View 3 RepliesSQL Reporting :: Create / Remove Columns Dynamically?
Jun 18, 2010I need to be able to add and remove columns dynamically depending on the results of the datasource (stored proc).
View 15 RepliesDatagrid With 2 Columns That Have Different Datatable Rows?
Feb 9, 2010i 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
C# - DataTable From Session Memory Has No Columns
Jan 18, 2011Im 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:
DataTable dt = (DataTable)HttpContext.Current.Session["ResultsTable"];
Data Controls :: Add New Columns To Existing DataTable With Data
May 7, 2015How 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.
View 1 RepliesC# - How To Create An Ilist From DataTable With Unknown Columns
Oct 27, 2010I have a DataTable that was built from dynamically created SQL, so I do not know the number of columns in the datatable.
How can I convert this datatable into an IList?
EDIT: I am then going to use this to send to a Telerik Grid on the page.
SQL Server :: Transpose Rows To Columns In Datatable
Feb 23, 2011This is datat table format :
TagName Timestamp Value
Tag1 21-2-2011 12
Tag1 22-2-2011 1
Tag2 21-2-2011 13
I want in this Format
TimeStamp Tag1 Tag2
21-2-2011 12 13
22-2-2011 1 0
