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
I spent an hour googling and trying. No success. I want to get the digits behind the dot or comma for my calulcated column:
[code]...
But it just shows me a 0 and no other digits.
I have a DataTable that's populated with Data. I'm looping through it and checking to see what the contents of the first cell of the first column are. If they have the same value on the current iteration as the previous, I want to insert a blank row into my DataTable. The problem is that the new row is being added to the end of the DataTable instead of between the two rows. How can I get it not to append the row to the end. This is what I'm doing:
[Code]....
make a query which will give me 200,000 results and bind it to the datatable but the error will pop out saying out of memory or request timed out.Can datatable/dataset handle these records or is my current server's hardware needs a little upgrade?Actually we are gettings millions of data and i dont have any idea how to solve this one? Have you worked on this kind of data? Do you have any idea on how to send my command from server A to server B while server A also processing request and will not wait for server B's result and server B will just update the records in my database, i think this can solve my problem if doing it in parallel.
View 1 RepliesI have a GridView bound to an ObjectDataSource. Most of the columns are directly databound, however one column is not - it's value is determined in code. The value is being calculated correctly at the RowDataBound event, however when there is more than one data row in the GridView, the calculated fields for all of the rows is blank, but the top row displays the bottom row's calculated field
View 2 Repliesi have one grid which have 5 columns 1 for subject,2,3,4 for marks which have textbox to insert obtained marks,and last column have one lable to display total of (2+3+4),now i want total value on textbox event,when user enter any value to any column of textbox i need to display total of all three columns in total column.
View 2 RepliesI 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();
DataRow[] buena = dtExcel.Select("NAME");
in order to get only a view or table with one column (NAME).
How can I achieve something like this. Is a gridview the best option or is there a better control.
I need the 1st column editable so users can type in values. Then the sub total and total must be automatically calculated.
[Code]....
Refer to datatable columns with database column names?
How can I get common columns from two intersecting datatable inside dataset?
View 2 RepliesHow to create a Grid view with 3 blank Row without any Datasource or use (Datatable ) in code behind
it means
Sl.no ID Name
1
2
3
it means no blank ID ,Name
At the top of my form I have some code that calculates a field
[Code]....
In my form I have this code. What changes below do I need to make to have the value of Date in XXXX?
<asp:SqlDataSource ID="SqlDataSource1" runat="server"
ConnectionString="<%$ ConnectionStrings:sqlConnection %>"
SelectCommand="SELECT NumPeople, Date1,Time1,Venue FROM People_Count WHERE ((Date1=@ArvDate and Time1 >= '06:00:00.000') or (Date1=XXXX and Time1 <= '06:00:00.000')) and Venue='F & B' ORDER BY Date1 ASC, Time1 ASC">
<SelectParameters>
<asp:QueryStringParameter Name="ArvDate" QueryStringField="ArvDate" />
</SelectParameters>
</asp:SqlDataSource>
I have a simple query on a table to calculate the sum of a field (This field is a calculated field from within SQL 2005)SELECT SUM(RunTime) AS TotaL FROM TimeSheets.It errors out with: Error Message: Operand data char type char is invalid for sum operator.If I use the MAX or MIN function, no isssues. The data in this field is numeric.
View 4 RepliesI am binding a gridview(bounded field columns). see code below
<asp:GridView ID="GridView1" runat="server" AllowPaging="True" AutoGenerateColumns="False"
CellPadding="4" CssClass="GridViewStyle" Width="700px" OnRowEditing="GridView1_RowEditing"> [code]....
there are three columns 1st is PL and 2nd is Finance . They bind some rows in gridview. both have float value; now i want that tha 3rd column
Total should show the value of (PL+Finance)
should I take the 3rd column as template field
My 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
button button lada.mp3 6/4/08
button button imasla.mp3
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 RepliesI have two columns first name and last name , that have duplicates, how can i remove the duplicates and only leave the distinct members intact?
View 6 RepliesI want to add and remove columns on specific conditions. how it's possible.
Alert: Add and remove not Hide and show...
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 as below:
Type Amount
A 1
A 2
B 3
C 5
B 1
How do I calculate and group the data to become the following datatable?
Type Amount
A 3
B 4
C 5
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?
View 14 RepliesHOW 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 using following code to get the columns from excel into datatable. In that in my excel file columns started from C to E means columns A and B is blank(Headers also). When i am reading excel file into datatable that time it's taking columns C to E. I want A and B also.Means when i am reading file that time blank columns are avoiding. I want blank columns should be read.
Excel File Data:
A B C D E
1 2 3
5 6 7
And in Datatable i am getting:
C D E
1 2 3
5 6 7
So i want Columns in Datatable also just like excel.
String
connString = ApplicationSetting
.GenerateExcelProvider(FilePath);[code]....
I wrote this source code
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="ShowLand.aspx.cs" Inherits="ShowLand" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
[Code]....
In this code the user can chose with the checkbox his choice and with the button to add this choice in the second gridview.Also in the textbox can give the quantity. I would like to find a way how to multiply the quantity with the price column.How can i do that?
how to copy only the columns in a DataTable to another DataTable?
View 2 Replies
