I have a DataTable available with me which contains thousands of rows. There is a column called EmpID which is containing '0' for some of the rows. I want to remove them from my current DataTable and want to create a new correct DataTable. I cannot go row by row checking it since it contains huge amount of data.
View 6 Replies
how to iterate through the rows in a database table without using a GridView? I have a DataSet and a SQLDataReader, but I can't iterate through rows using the SqlDataReader.
View 13 Repliesi am having Nested Gridview and from the child Grid i have to select the checkbox to retrieve the id's by iterating the child grid and that to on the Button Clik which is outside the Gridview.
View 2 RepliesDoes anyone know how to dynamically add and remove rows in a table triggered by a button click from the backend (in c#) using asp.net?
Here's how it might be done in javascript, is there any way to do this in the asp.net framework?
[URL]
I have one Store Procedure that generating report ..
For storing the data there , i used many temp. tables. There is many Select Query , little less insert and delete query.
Now if there is huge data around 1 lac in temp table my select query taking to much time and also may be insert and delete query
I added Primary key to all auto Increment Field in temp table. Also defined Clustered index on that primary key as unique Clustered index to improve the performance .
But there is not so much improvement in case of huge temp table.
Right now the whole Store Procedure is taking time to complete around 1.5 days or around 30 hours ..
So i want to increase the performance as much that it completes on nearly 3-4 hours.
I have a project which generates snapshots of a database, converts it to XML and then stores the XML inside a separate database. Unfortunately, these snapshots are becoming huge files, and are now about 10 megabytes each. Fortunately, I only have to store them for about a month before they can be discarded again but still, a month of snapshots turn out to become real bad for it's performance...I think there is a way to improve performance a lot. No, not by storing the XML in a separate folder somewhere, because I don't have write access to any location on that server. The XML must stay within the database. But somehow, the field [Content] might be optimized somehow so things will speed up...I won't need any full-text search options on this field. I will never do any searching based on this field. So perhaps by disabling this field for search instructions or whatever?The table has no references to other tables, but the structure is fixed. I cannot rename things, or change the field types. So I wonder if optimizations is still possible.Well, is it?The structure, as generated by SQL Server:
CREATE TABLE [dbo].[Snapshots](
[Identity] [int] IDENTITY(1,1) NOT NULL,
[Header] [varchar](64) NOT NULL,[code]....
Performance isn't just slow when selecting data from this table but also when selecting or inserting data in one of the other tables in this database! When I delete all records from this table, the whole system is fast. When I start adding snapshots, performance starts to decrease. After about 30 snapshots, performance becomes bad and the risk of connection timeouts increase.Maybe the problem isn't in the database itself, although it's still slow when used through the management tool. (Fast when Snapshots is empty.) I mainly use ASP.NET 3.5 and the Entity Framework to connect to this database and then read the multiple tables. Maybe some performance can be gained here, although that wouldn't explain why the database is also slow from the management tools and when used through other applications with a direct connection...
I want to remove rows (which contains text) of a gridview on a button click..
View 5 RepliesI am using below article provided by you:
[URL]
I need to provide Remove button with every row added to grid. So that only the current row get removed on remove button clicked of that row.
I m working on MOSS 2007. My project requirment is to fetch the data from list to gridview with check boxes in front of all rows. when we click the checkbox infront of rows then that rows will be move to another gridview & remove from first gridview. Then I have to search the rows by location. following is my code it fetches the list in gridview & move rows from one gridview to anothe
1. how to remove selected rows from gridview & list?
how to search by location.
[code]....
I have 2 gridview with add/remove buttons between them. I want the user to select an item in one gridview and based on the button clicked I need to remove the row from one gridview and add it to the other. I can idenfity which row is selected but I don't know how to remove/add the rows.
View 6 RepliesI have a HTML table with 5 rows and 2 columns.I have set the background color to gray, but I how do you eliminate the grid lines as they are displaying as white? I wish to remove/hide the grid lines and table border so that only the gray background color Gray shows.
View 4 RepliesI 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]....
I have some code that iterates through three datalists when they are bound and looks for certain values. If those values exist it hides that particular row in the Datalist. This is working beautifully, except the last row in each datalist is unaffected by the iteration. So for example if I have the following numbers 2, 5, 6, 5, 7, 5 and I want to hide all the rows that contain 5, it produces the following: 2, 6, 7, 5.
Here is my code:
Dim dlitem As DataListItem
Dim tb1 As Label
For Each dlitem In OnHoldDataList.Items
tb1 = CType(dlitem.FindControl("LocationLabel"), Label)
[Code]....
I have a dataset that has two datatables.
In the first datatable I have EmpNo,EmpName and EmpAddress
In the second datatable I have Empno,EmpJoindate, EmpSalary.
I want a result where I should show EmpName as the label and his/her details in the gridview
I populate a datalist with the first table, and have EmpNo as the datakeys.
Then I populate the gridview inside the datatable which has EmpNo,EmpJoinDate and EmpAddress.
My code is some what as below
[Code]....
Now I have a problem, I have to bind the Details of the corresponding Employee to the gridview. Whereas the above code will display all the details of all employees in the gridview.
If we use IEnumerable we give a condition where(a=>a.eno=EmpNo), and bind that list to the gridview.
How do I do this in datatable.
I modified the program as below
Igor, instead of datarelation,(my TL did not approve of it) I used IEnumerable
[Code].....
I have 2 datasets as shown below,
dsDBFFulfillment = conn.GetDBFDataSet(ReminderQry);
dsDBHcniID = conn.GetSQLDataSet("spGetRemindpostcards", null, ConnectionType.SRRDConnection);
I have a result in dsDBFFulfillment,Consider the field HcnID,Name,Address In the second dataset dsDBHcniID i have only HcnID.
Now in the third dataset i want a result such that,
1.The records in the dataset dsDBHcniIDshould be removed from dataset dsDBFFulfillment by checking HcnID.
Something like this, dsDBFResult = dsDBFFulfillment.Tables[0].Rows.Remove(("HcnID='" + dsDBFFulfillment["HcnID"] ));
I have a data table called Songs It has SongId as Primary Key of type INT SongName of Type VarChar UserId of Type Int. I simply want to check how many entries are in the Table already by The UserId before they insert more. So If there are already 3 songs by that User, I want to stop the insert process and warn them they have the maxium already. I think i am halfway there already using code below but problem is that UserId is of Type GUID, and not Int so I am missing something. On my Aspx, Page, I have a DetailsView for the Database Insert. I also have the following code using BusLogic Layer and DAL
SongsBLL
public int ScalarQuery(Guid ArtistId)
{
int returnValue = ScalarQuery(ArtistId);
return returnValue;
}
Code Behind ASPX page
This in in DetailsView_ Item Inserting Event
SongsBLL number = new SongsBLL();
currentCount = Convert.ToInt32(number.ScalarQuery(currentCount).ToString());..........
What's the best way to do this? After I load my DataTable from SQL, I'm looping through it with a For Each...Next loop performing some calculation for each DataRow. If the values don't fall within a certain threshold, I want to remove that Row. However I can't just do a MyDataTable.Remove(MyRow) or it breaks my For Each loop.
View 6 Repliesi have a asp:TextBox control on the page. i'm setting it to a TextMode="MultiLine", I am not setting a number of rows or columns. I am setting a width and height in CSS for the control.
asp.net is still adding, what i assume is a default, rows and cols attributes on the rendered control. cols="20" and rows="2" this isnt an issue in any sane, browser, but in IE the CSS height is ignored and only 2 rows of space is show.
How can I prevent these attributes from showing up on the rendered control?
Edit:
This is an issue only in IE8 in compatibility mode, IE7 and IE6. I'm not worried about IE6, but IE7 needs to work.
I have two Data Table, One data table contain Product-A information, and another data table contain Product-B Information, I want to get the uncommon values between the two data table, I would like to achieve this using LINQ, find the sample values below
Product Data Table
Product-A-Id ProductName
W10012 A
W10013 B
W10014 C
W10015 D
Sales Data Table
ProductId ProductName
W10013 B
W10013 B
W10015 D
X10020 AC
I want to find the uncommon data from both data table using LINQ, So find my expected Data Table result is
Result Data Table
ProductId ProductName
W10012 A
W10014 C
X10020 AC
I want to bind gridview with datatable in this dt ihave 4 columns , dt
Id Name isdelete value
1 xyz true
2 uio false
3 bbb true
4 ccc false
this is gridview
[Code]....
but i want not bind those rows whose isdelete coumn value is false and i want to show 4 th column as textbox and user will enter some text or number and if he click save button outside of gridview one record shld save in database
Given:
string removeRows = "";
int i = 0;
foreach (var row in userStats)
{
if (row.OrderRow.RegistrationType == "Want Removed")
{
removeRows = removeRows + i.ToString() + ",";
}
i++;
}
what's the Lambda syntax to execute the removal?
i am trying to export gridview into dataset using Datatable but if u used "Microsoft.Office.Interop.Excel" the datatable showing me sum error. is there any other way to export gridview in dataset???
View 1 RepliesI need to let my user add rows dynamically to a table, and after doing some research, it seems the best way to do this is through a GridView bound to a DataTable. However, I'm really struggling adding dropdownlists to the datatable, and this showing them in the gridview.
Here's the design I want:
ddl1 | ddl2 | ddl3 | ddl4 | ddl5 | ddl6 | ddl7 | textbox
When the user opens the form, he or she will be presented with one row. ddl2 etc will be populated when ddl1 is selected etc etc. When appropriate, the textbox will be enabled allowing the user to enter a comment (this is to report errors, and since users are, at best, not to trust to write the same thing twice, I need to use ddls.
Now comes the question - how do I add a ddl to the datatable? I've tried several ways, but I cannot get them added.
I have ASP.Net Repeater control.
The itemtemplate of repeater control is having a table row
<asp:repeater>
<header>.....</header>
<itemtemplate><tr><td>some text</td></tr>
...</asp:repeater>
And I am binding these repeater control with some datasource.
My requirement is to have focus on first item row and i should be able to use tab ket to navigate between various rows of the repeater control(which is ultimately a table)
There is no anchor(<a>) control inside the table.
I am using onclick event on table row which does something in my application.
I want my user to use TAB key to navigate between rows.
How do I remove duplicate rows from a data table based upon a two column values;I want to pass in a Data Table and a column names and get the data table back with data rows where that columns value are unique.
I have a Data Table with Duplicate Rows i want to delete the duplicates rows based upon two column values if both columns values are there then Delete the row.
