There has to be an easy answer:I want to loop through multiple datatables... example:
for (int i = 1 ; i < 7 ; i ++ )
{
DataTable dt = (DataTable) "dt" + i.toString();
// do something with DataTable dt1 as DataTable
// ie...
int x = dt.Rows.Count
}
The above code obviously does not work.. but how do you find a DataTable like you do FindControl with WebControls??
I 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]....
'DataTable' is an ambiguous reference between 'System.Data.DataTable' and 'Microsoft.Office.Interop.Word.DataTable'
View 3 RepliesI was reading: [URL]
But I have give a compilation error:
CS0246: The type or namespace name 'DataTable' could not be found (are you missing a using directive or an assembly reference?
i have the dataset with one table.Table contains three column like 'Name','Location','Pin'.I would like to move the data from another table based on schema.
View 2 RepliesIf I am passed a datatable and I cant change the column structure..is there anyway to set an existing column to a Primary key so I can easily Find() the row I am looking for?
View 1 Repliesim trying to copying specific record from one datatable to another datatable i used below code
public System.Data.DataTable selectspecificdatarow(System.Data.DataTable dtg, int count, int startindex)
{
System.Data.DataTable dtn = dtg.Clone();
for (int i =startindex; i < count; i++)
[Code]....
its taking too long time in cloneing is there any better way to do this task which is Time effecent
how to join two datatable datas into one datatable to show in one gridview
i.e in 1 datatable i have username and pwd and in another datatable i have that user details. how to show all these in one datatable to get those values display in gridview(asp.net)
I have a data table say i have a column like x which is primary key so i should get the row where this x values in empty.
View 2 Replies[Code]....
How find the DataType MisMatch Row In DataTable.
Dim dt As New DataTable Dim da As New SqlDataAdapter(s, c)
c.Open()
if Not IsNothing(da) Then
da.Fill(dt)
[code]...
When I call da.fill I am inserting all records from my query. I was then hoping to filter them to display only those where the GroupingID is equal to 0. When I run the above code. I am presented with all the data, the filter did not work. Please can you tell me how to get this working correctly.
how to copy data from datatable to table in dataset i ry this but its readonly property
ds.datatable1=newdt.copy
I have two datatables, I want to get all records which are in one datatable but all matching records which exist in another datatable should not be available.
In terms of set, you can say that record which are in 1st datatable but not in 2nd DataTable.
I have a DataTable for which a PrimaryKey constraint has been set to be a combination of an integer column and a datetime column. When I try to 'Find' a row by saying,
dtFunds.Rows.Find(iContainerIndex)
I get a null value. iContainerIndex has been defined as an object array of size 2 with the integer ID and date values in it.
When I set a breakpoint in my code, I see that the very same values are present in the datatable.
If I try to execute, DataTable.Select() method with the integer column filter, I get a result - but returns no result when called with the date column filter.
What am I doing wrong here? The very same DateTime value is present in the datatable.
As I iterate through a DataTable object, I need to check each of its DataRow objects against the items in a generic string List. I found a blog post using the List's Find method along with a delegate, but whereas that example has a separate class (Person), I'm attempting something like the following using an instance of the string object:
// My definition of the List object.
List<string> lstAccountNumbers = new List<string>();
...
// I populate the List via its Add method.
...
foreach (DataRow drCurrentRow in dtMyDataTable.Rows)
{
if (lstAccounts.Find(delegate(string sAccountNumber) { return sAccountNumber == drCurrentRow["AccountNumber"]; })
{
Found_DoSomething();
}
else
{
NotFound_DoSomethingElse();
}
}
However, with this syntax I'm receiving "Cannot implicitly convert type 'string' to 'bool'" for the if block. what I'm doing wrong and how best to accomplish what I'm trying to do?
I have made a custom DataTable
Dim dt As New DataTable("RizPardakht")
Dim RowID As New DataColumn("tbz_GatiPardakhtID")
Dim FishNo As New DataColumn("tbz_FishNo")
[code]...
how to copy only the columns in a DataTable to another DataTable?
View 2 RepliesI 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 RepliesBelow is a beginning attempt to increment through a DataTable populated by a Stored Procedure and create a new DataTable where every Category is represented by exactly four products. I need to add dummy product entries for some and skip over those with over four products.
A) - I think I understand the basics but this builing from scratch is not my practice.
1) I do not know how to query a previous row in reference DataTable.
2) I do not know how to jump to next row from IF construct.
3) I hope I am able to build a DataTable row by row.
4) Partial sample data is at bottom of pseudo code
[Code]....
i don't have table in database. i need to create table and insert my data table values to database at a single hit.i am creating data table at front end and i want to insert into database at single hit to the database. is it possible to do?
View 5 Replieshow to get datatable from gridview?
somthing like this:
DataTable dt = gridview1.DataSource as DataTable;
I don't want to save data in session before grid binding.
$('#dFinalReport').html(_todayOrderLstHtml);
$('#dFinalReport').dataTable(
{ "sDom": 'l<"floatR pLeft10"T><"floatR"f>rtip',
"aaSorting": [[3, "asc"]], "iDisplayLength": 20
});
How to use datatable in javascript?
i declared div element in html and called datatable using div id(dFinalReport).i got a error message
DataTables warning (table id = 'dFinalReport'): Attempted to initialise DataTables on a node which is not a table: DIV
which id i should use to call datatable and when i call?
Possible Duplicate: How to read a csv file into a .net datatable. I have a problem in my project, where I am trying to read data in a csv file, I want to convert this data to a datatable. How can I do this?
System.Data.Odbc.OdbcConnection conn;
DataTable insDataTable = new DataTable();
System.Data.Odbc.OdbcDataAdapter da;
string folder = files.FullName;
string file = System.IO.Path.GetFileName(fUpload.PostedFile.FileName);
conn = new System.Data.Odbc.OdbcConnection(@"Driver={Microsoft Text Driver (*.txt; *.csv)};Dbq=" + folder + ";Extensions=asc,csv,tab,txt;Persist Security Info=False");
da = new System.Data.Odbc.OdbcDataAdapter("select * from [" + file + "]", conn);
da.Fill(insDataTable);
It gives an error like :
ERROR [42S02] [Microsoft][ODBC Text Driver] The Microsoft Jet database engine could not find the object 'test.csv'. Make sure the object exists and that you spell its name and the path name correctly. I am checking there is a file 'test.csv' and the file path is correct
How 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.
in my web application i am using datatable and inserting outlook contacts in that. this is my code
[Code]....
My doubt is can i write the code like this when contact is insert into mytable. the details of the row can read into a string like this
string s= myTable.Rows[0]["Email"].ToString(); in foreach