Web Forms :: Compare 2 DataTables With Different Columns?
Jul 30, 2010
I need to compare 2 DataTables that do not necessarily have the same structure. One dataTable is the master (dtDB), the second dataTable (dtFORM) is what will have the changes, if any, but not necessarily all of the columns of dtDB. In both tables the first column will be the primary key and all columns that dtFORM has, dtDB will have.
There is another DataTable (dtResults) that will flag the differences
This is where I am at so far:
[Code]....
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Similar Messages:
Mar 29, 2010
I have two DataTables, with Different Columns. Some of the Columns are same between them.
i am looking to do this.It is also refered to as MINUS and is simply all the rows that are in the First table but not the Second.
These three colums are same between the two tables.
string[] strCols = { "CustomerID", "CustomerName", "CustomerCity" };
I tried this but it seems to return all the Rows from the Table1.
[Code]....
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Jun 30, 2010
I have two datatables with same columns. I want to compare those two tables and I want to know whether data in those tables is same or different. If both Prod and Qty are same then I have to get true or else false.
That is
TblOne
Prod Qty
A 2
B 2
C 3
TblTwo
Prod Qty
A 1
B 2
C 2
As of now I am looping thoruh all the rows. Is that the only solution or is there any best way to do this ?
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Feb 25, 2016
I need to know one Comparisons in CSV like this...
These are the columns in CSV 1 and CSV 2 :
Dekking id; Dekking; Acnv_id; Acnv description; From ; To; Value
Sample From CSV 1 Data :
Columns 1
499; Algemene Contractspecificaties; 122; Periodiciteit; 15/01/16; 15/01/16; 48
Columns 2
500; Opbouw Pensioenreserve; 130; Premietaks Tak 24; 15/01/16; 15/06/32; 29
Sample From CSV 2 Data :
Columns 1499; Algemene Contractspecificaties; 122; Commerciële; 08/01/16; 08/06/32; 12
Columns 2
500; Opbouw Pensioenreserve; 130; Waarborg 23; 08/01/16; 08/06/32; 29
I need to know how to compare these two columns from the column "Acnv description;" to "Value" as mostly the values from "Dekking id" to "Acnv_id" would be mostly common.
How to compare the values sepately FROM "Acnv description;" to "Value" Columns values IF the Columns "Dekking id; Dekking; Acnv_id;" MATCHES.
Dekking id; Dekking; Acnv_id; Acnv description; From ; To; Value
How to compare only these columns in the CSV ...
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May 23, 2010
If I have a GridView with 4 columnsthree of them displaying different prices of the same product and the fourth one should display the cheapest..how can I compare the values of the columns ??
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Dec 3, 2010
is there an easy way to compare two columns in two datatable to see if they match? I need to check if the values in column["x"] of datatable1 occur in column ["y"] of datatable2, without iterating through both tables (for each value in column of dt1, check column of dt2). I tried:
foreach (DataRow dr in dt1.rows)
if (dt2.rows.find(dr["x"]) but this checks the whole row and if finds an "x" in any column, "if" condition is true. I need to only check one column of dt2. Tables have different columns but the same primary column and that's what I need to check
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Apr 22, 2010
I have 2 coulmns
PromCode, StartDate , EndDate
A001 2010/05/01 2010/05/30
A002 2010/04/01 2010/04/30
C120 2010/03/01 2010/03/31
DECLARE @NOWDATE VARCHAR(10)
SET @NOWDATE = CONVERT(VARCHAR(10),GETDATE(),111) -- Get System Date
I want to use (StarDate + EndDate) compare with SystemDate to make sure if the PromCode is process or expired..
my problem is .. how to compare both StartDate and EndDate with SystemDate?
this is the result I trying to query..
PromCode, StartDate , EndDate ,Status
A001 2010/05/01 2010/05/30 Future
A002 2010/04/01 2010/04/30 Valid
C120 2010/03/01 2010/03/31 Expired
SELECT
PROMCODE
,STARTDATE
,ENDDATE
, .... AS STATUS ( does here I should use when..case? or use subquery? I try use Case..but get syntax error)from Table
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Jan 10, 2011
When attempting to place controls in different content areas using Masterpages and trying to use a compare validator, I get the error: Unable to find control id 'txtStartDate' referenced by the 'ControlToCompare' property of 'cvlDate'. I have also attempted to set it within the c# code behind in page load: cvlDate.ControlToCompare = txtStartDate.ID and by using findControl there must be an easy way to achieve this?
<asp:Content ID="Content4" ContentPlaceHolderID="leftForm" Runat="Server">
<asp:Label ID="lblStartTimeEnter" runat="server" Text="Start Time:" Width="100px"/>
<asp:TextBox ID="txtStartTime"runat="server" MaxLength="50" Width="250"/>
</asp:content>
<asp:Content ID="Content4" ContentPlaceHolderID="rightForm" Runat="Server">
<asp:label ID="lblEndDateEnter" CssClass="formMargin labelInput" runat="server" Text="End Date:" Width="100px"/>
<asp:TextBox ID="txtEndDate" CssClass="formMargin" runat="server" MaxLength="20" Width="250" ClientIDMode="Static"/>
<asp:CompareValidator ID="cvlDate" runat="server" ControlToValidate="txtEndDate" ControlToCompare="txtStartDate" Operator="GreaterThan" Type="Date" ErrorMessage="Start Date must be before End Date" > *</asp:CompareValidator>
</asp:content>
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Feb 15, 2010
I am using compare validator to compare date... But Its not working ...I have used calendar extender...with date format as "dd/MM/yyyy"...
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Apr 17, 2010
I am trying to check for a condition such that a date in an input control (textbox) is not greater from a date 1 years from current date(exactly) and also it should not be less than a date 1 year back from current date. for eg. if today's date is "21/dec/1990" then usen cannot enter a date in textbox which is less than 21/dec/89 and it should not be greater than 21/dec/1991. for this i first tried to confirm the greater than condition, i wrote the following code:
<asp:TextBox
ID="TxtSessionFrom"
runat="server"></asp:TextBox>
<asp:CompareValidator
ID="CompareValidator1"
runat="server"
ControlToValidate="TxtSessionFrom"
ErrorMessage="CompareValidator"
Operator="GreaterThanEqual"
Type="Date"></asp:CompareValidator>
CompareValidator1.ValueToCompare=(DateTime.Now.AddYears(1).ToString());
but this gave an error: The value '' of the ValueToCompare property of 'CompareValidator1' cannot be converted to type 'Date'.
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Oct 18, 2010
I need to asynchronously retrieve several resultsets which I store in DataTables and add these DataTables to a DataSet. When the final DataTable is filled and added to the DataSet the page must then continue processing utilizing this DataSet I have figured out how to implement delegates to asynchronously retrieve my DataTables but I'm unclear how to add them to a DataSet in a thread-safe manner. How is this best accomplished? Before processing I know how many DataTables there will be, so what is the best way to track the progress of the asynchronous retrievals and allow the page to continue only after I have all of the data?
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Nov 10, 2010
I am creating varying number of datatables depending on user submitted query. I want to dynamically create collapsible panels for each datatable.
<asp:panel id=pnltitle1>dt1.rows(first row)</asp:panel>
<asp:panel id=pnlcontent1>dt1.rows(remaining rows)</asp:panel>
<asp:panel id=pnltitle2>dt2.rows(first row)</asp:panel>
<asp:panel id=pnlcontent2>dt2.rows(remaining rows)</asp:panel>
<asp:panel id=pnltitle3>dt3.rows(first row)</asp:panel>
<asp:panel id=pnlcontent3>dt3.rows(remaining rows)</asp:panel>
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Jul 9, 2010
I need to asynchronously retrieve several resultsets which I store in DataTables and add these DataTables to a DataSet. When the final DataTable is filled and added to the DataSet the page must then continue processing utilizing this DataSet I have figured out how to implement delegates to asynchronously retrieve my DataTables but I'm unclear how to add them to a DataSet in a thread-safe manner. How is this best accomplished? Before processing I know how many DataTables there will be, so what is the best way to track the progress of the asynchronous retrievals and allow the page to continue only after I have all of the data?
View 6 Replies
Aug 2, 2010
I have two datatables with datavalues
datatable A
ID data1 data2 data 3
datatable b
ID data4 data5 data6
I would like to merge datatable A and datatable B like so the resultset is like this in tableC
ID data1 data2 data3 data4 data5 data6
When my code finishes the column names are in this format but the data from dt b is pushed down into new rows instead of added on as new columns.
i used merge method but it giving like the bellow
example:
ID data1 data2 data3 data4 data5 data6
1 X X X
2
3
4
5
1 X X X
2 X X X
3
4
5
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Apr 30, 2013
if i want to get multiple values from database and pass this dataset to another page can we use session to store the dataset values..i knw we can..but some one says that its not a gud approach..this will cause server process down..is it true?if it so then wat are all the other ways to do that?
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May 20, 2010
I am pulling information from two different databases (structure is the same) and putting them into two datatables. The problem I am having is figuring how to merge the data togther in a single gridview and change cell background color for only the data in the second datatable.
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Jul 23, 2010
Among the many aspects of asp.net that I haven't focused my development on yet is caching. I have a perfect application for it now, I think, with a GridView that sits inside a repeater, and is bound in the Repeater ItemDataBound event. The contents of the GridView will remain static for each Repeater data item for each Client. The nature of the data in the GridView is that it can change from day to day per Client, but wouldn't need to be refreshed more frequently than that. The Page istelf only deals with one at a time Client based on a QueryStringParameter. My questions are a) how do I cache the DataTable so that a call to the DataBase isn't made each time Repeater item is bound and b) can I create/cache multiple DataTables (one for each Client) and let them live for day, checking for existence before calling the SQL stored procedure to regenerate the data?
My DataTable method: [Code]....
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Aug 3, 2010
i am making relation between two datatables and m getting this error
in this ds.Tables(0).Columns("In_ID") datatype is string
ds.Tables(1).Columns("row_id") datatype is integer
how i do the type casting here to make dataset relation
ds.Relations.Add("Rel_1", ds.Tables(0).Columns("In_ID"), ds.Tables(1).Columns("row_id"), True)
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Sep 27, 2010
I have 2 datatables and i would like to join these two tables based on same TemplateID in both the tables. How can i do it in c#.
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Nov 25, 2010
I am trying to create a stock scanner which allows users to filter stocks based on multiple criteria that they select.
Like the following example with 2 criteria:
Criteria 1 Filtered Result: StockA, StockB, StockC, StockD
Criteria 2 Filtered Result: Stock B, Stock C, StockE, StockF
SCANNER RESULT: Stock B, StockC (ideally this result would be displayed in a GridView)
Now this seems like an easy task for a simple SQL JOIN statement, but the problem is that the SQL statements I've written for some criteria are already so complex that it's unthinkable to combine them further by using a SQL JOIN statement.......(yes I've tried and failed).
I think the only way to accomplish this is to put each criteria-filtered result into an array or datatable, and then try to query to see which stocks exist in all the arrays/datatable (in other words satisfy all criteria), and to display these stocks in a gridview. After doing some research online, it is possible to do query from multiple datatables by either using:
JOINVIEW(DataRelation) or LINQ
But which one is the best method (if it works)? I didn't consider using a loop for this since it would be too inefficient, especially if a user select many criteria.
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Jul 31, 2010
My project is in Asp.Net Webforms using C#.
On one of my web pages, I want to have two tables. One is going to be a summary table and the other a more detailed breakdown of the summary. When the user clicks on one of the rows of the summary table, I want the corresponding breakdown rows to appear in the breakdown table.
These tables can have anything between 60 and about 500 rows.
I have thought of two possible ways of doing this and I'm not sure which is best, or if there is another, better way of implementing this:
1) When a user clicks on one of the rows in the first table, a postback event happens, and the data for the second table is loaded from the code behind.
2) When the webpage is loaded for the first time, both tables are filled with all of the possible data, but all of the rows in the second table have the "display: none;" CSS attribute. When a user clicks on a summary row, the CSS of the corresponding breakdown rows is changed using JavaScript.
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Feb 11, 2010
but back in the days of Webforms you would return a Dataset which you would then bind to a grid. But now in MVC you're not supposed to pass a datatable because you cannot serialize it and it's technically passing objects into the View where it doesn't belong? But how on earth am I meant to display data on a view?! I can't use LINQ to SQL classes here since this is a pure in memory data structure.
Ideally I'd just like to able to have an object which I can iterate within the view.
I'm really at a bit of a loss I have read the article from the "Gu" and I can only surmise that I have to pass back a ViewData Object instead?? Am I going nuts here?
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Jan 15, 2010
I am new to c#.net.i have a method where i pass parameters in a loop and for each parameter there are different rows returned .rows (which have data of different data types) from database.I want to store that data rows somewhere like arraylist. and use for furthue peocessing.Plz tell me how to do this. enter code here
/*ideally Get_ChildAndParentInfo(int pointid) function returns array list but how to deal with array list containing datarows with different data types */
public static ArrayList Get_ChildAndParentInfo(int PointID)
{
[code]...
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Sep 20, 2010
I created a gridview that is made up of 4 gridviews and using a stored procedure to populate it. I create columns at runtime because the number of columns changes all the time.To make the grids editable I am adding template fields at runtime as I create the columns, this is to ensure that a user is able to edit the cells and some foot values update. Reason why I have four grids is to freeze rows and columns like in excel using javascript. The problem is that performance is very bad especially in IE, the grids take a long time to load. I am not sure if this is caused by the data load or the creation of text boxes. see some of the code below for my _aspx page:
[Code]....
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Mar 18, 2010
in asp.net page user able to select gridview Columns, and it will hide remaining columns and that selection done by check box with column list bellow is Image link , what exactly I am looking for [URL] it look bellow after selection of column done [URL]
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