I want to read complete column from the dataset using select command or whatever without looping the rows of the table.Because in table i got 35000 records i only want to read a one complete column from the top to the end using dataset.
Eg: select column_name from table.
lly, dataset.tables[0].select["Column='Product'"]
I have tried with this but throwing exception.
I am Using asp.net grid view and i have one column in that namely Calories and i want to show whole caloreis total at the top. i used the following code:
[code]...
Currently, I am working on Gridview of ASP.net VS2010. In this application
1. I want to select complete column on a selection of 1 single cell in that column.
2. Gridview have 2 groups into it. Each group having same column name.
Like
Unloading | Loading
Amount| Item | Amount| Item
| | |
If I select Loading-> Amount column, it should select Unloading->Amount and Loading->Amount column as well.
Having a hard time to get the .xls file data to a dataset:
Here is what I have done so far:
[Code]....
My .xml file example:
[Code]....
I am trying to read a string of xml into a dataset by using the following code
[Code]....
As I proceed to bind the 'dsParameters' to a gridview, I was thrown the 'The IListSource does not contain any data sources'. As I step through my code, I found that xmlSR is null. Any idea why is that so?
I have a problem that I have been trying to solve the past two days, but I cannot figure it out...I have a folder which will have 60-70 Excel Files or CSV Files (they are right now). There are no headers in them, but they all have the same # of columns and the columns are in the same order in each fileI need to read each file in the folder, grab the data from the file and put it in a Database file. So all files will be read and then the data from them I guess put in a DataSet and then put into a Database (SQL).
View 3 RepliesI always thought we had to use a DataReader or a Dataset to read a given SQL data but i realized that it is not necessary to use them to read an SQL Output Parameter(im not a SQL expert).
View 1 RepliesI had a xml data, form that i need to get the values, as
<PREFERENCES>
<AccessNumber name="itfs">
<Features value="8067400680" Status="False" />
<Features value="8067400681" Status="False" />
</AccessNumber>
<AccessNumber name="sns">
[Code] ....
I need to get each attributes seperately, as
tollaccess
80677400567
false
Can I read from a dataset and create a hierarchical horizontal menu?
View 4 RepliesI have two extremely long queries that I am running on multiple tables, using an INNER JOIN. The only difference between these two queries is that they take different input values for one of the WHERE clauses, which they get from two separate DropDownLists. The results of these queries are identical, save for the time1/time2 columns.string query1 = "select Name = t1.name, time1=(SELECT hours FROM table3 WHERE street=list1.selectedvalue), t2.address from [table1] t1 INNER JOIN [table2] t2 ON t1.param = t2.param ORDER BY Name"
View 1 Repliesi have dataset having one table have 5 columns fill data from database.
When i run application datatable contains more than 50 rows, I would like to update value of datatable after getting data from databse. My requirements are This table have few cells having Null value, I would like to replace null with "-" ? One column is System.datetime datatype, where i would like to remove time. I would only like to have date?
Here i am thinking that i apply one loop of rows present in datatable and update cells accordingly. But i am searching any direct update method?
I have a SQL stored proc that returns a dataset to ASP.NET v3.5 dataset. One of the columns in the dataset is called Attend and is a nullable bit column in the SQL table. The SELECT for that column is this:
CASE WHEN Attend IS NULL THEN -1 ELSE Attend END AS Attend
When I execute the SP in Query Analyzer the row values are returned as they should be - the value for Attend is -1 is some rows, 0 in others, and 1 in others. However, when I debug the C# code and examine the dataset, the Attend column always contains -1.
If I SELECT any other columns or constant values for Attend the results are always correct. It is only the above SELECT of the bit field that is behaving strangely. I suspect it has something to do with the type being bit that is causing this. So to test this I instead selected "CONVERT(int, Attend)" but the behavior is the same.
I have tried using ExecuteDataset to retrieve the data and I have also created a .NET Dataset schema with TableAdapter and DataTable.
i have the following column "ID" in dataset: myDataSet.Tables("Table"), is it possible to read the columnd ID and get max id what is in the dataset.
View 6 RepliesI have a column in a dataset which shows the time as 9:16
On my UI, I have Hour dropdown and a Minute dropdown. I want to split the time such that 9 is bound to the Hour dropdown and 16 to minute.
I follow the tutorial and create DAL with Dataset. I created a Table Adapter with many column, but when i Call a simple Get for 2 column only. The system display 2 column and the rest column with empty data.
example: Table with 40 column define in Dataset in DAL. I have GetMember from Dataset with 40 column, some request only 1 column (with 39 empty), some request 22 column (with 18 empty column). Will this affact the performance?
I want to retrieve identity column value after running Insert or Update (using Access DB in C#). How can I do it?
i use a Typed dataset to fill and update...
i have a dataset and a table into named Students. Students(StudentName, age)
i wanna name colunm to string array. but not use loops (for foreach..). is there any way?
string[] array = this.dataSetZLC.Student.StudentNameColumn..
i am creating a dataset from SP Sp when executed in query analyser dislays the output but when i used the same for creating datset , its created but i dont get any columns i checked the xsd in notepad but there is no column source names
View 1 RepliesI have read the excel in asp.net. I am using OledbDatareader for read the column name.
[Code]....
Now my problem is the "date" field. If Excel sheet having column name "Date" then i got the error. i could not use the Column index because its also not fix. How can i ignore the upper case charactors in column name ?
I Get this stupid error when I try to update one of my products.Can some tell me why and how I remove the error?
Error:
Column 'CategoryName' is read only
http://img88.imageshack.us/img88/9123/errorscreenp.jpg
I have a datatable in MS SQL that has FirstName and LastName. In MS SQL I created a computed field called FullName that was ((rtrim([LastName])+', ')+rtrim([FirstName])) I created a DataSet and a Business Logic Layer. In my typed DataSet I saw FullName in the listing when I created it. I am able to use FullName in my webpage. I use it to populate a dropdownlist. However, now when I make changes to the Customer Table I am getting this error message (seen below)
Question: Should I have created the field FullName in my MS SQL Table or should I have left it alone and somehow just added a column to the DataSet and placed an expression in the FullName column? The column "FullName" cannot be modified because it is either a computed column or is the result of a UNION operator. Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.Data.SqlClient.SqlException: The column "FullName" cannot be modified because it is either a computed column or is the result of a UNION operator. Source Error:
[Code]....
Source File: c:Users ottfarmsAppDataLocalTempTemporary ASP.NET Filesinternalauburnriverside98ea0e1f2a7f0720App_Code.lbdcba1v.2.cs Line: 1240 Stack Trace:
[Code]....
The following query returns me the column name from the table in the database, and stores the column name in the grid. How can I change the column name in the grid using following code, if its possible?
DataSet p_dsInformixDataDs = new DataSet();
string cmd = "SELECT * FROM CUSTOMERS";
try
{
using (IfxDataAdapter da = new IfxDataAdapter(cmd, m_InformixDBConn))
{
da.Fill(p_dsInformixDataDs);
}
}
DataView myDataView = new DataView(m_dsInformixDataDs.Tables[0]);
if (myDataView .Count > 0)
{
GridView1.DataSource = m_dsInformixDataDs;
GridView1.DataBind();
}
i want to read last 20 record of a column in c# code
View 2 Repliesim trying to read column names from excel .
View 3 Replieshow to convert the dataset columnnames to UPPER case letters. I have a code like :
[Code]....
But returned dataset result is not showing the uppercase column names.
