i have list box, in that list box have some fields(SQL Table fields) in run time i arrange the fields(based on my requirement order) , based on the list i want to change the columns in data table dynamicaly. how i change the columns in the datatable.
View 6 RepliesI have on datatable in it there are columns like TimeStamp,value....Timestamp formate is mm/dd/yyyy
i want to convert all Timestamp value in dd/MM/yyyy format...i cant do it on database site not using orcale,sql.
Is it possible without loop?
If 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 Repliesi have a datatable with several columns and rows. now i want to copy the last column fully (all rows) and create the new column with that values.
it means last column values sholud be moved to new column (now this is the last column).
I am grabbing an XML feed an throwing it into a dataset. I am looping through the datatable that is in the dataset and adding a column to the datatable (Distance) that is the result of a calculation. What I then need to do is sort the dataset on the new column (Distance) I added, but it is not working... Here is a sample of my code.
[Code]....
I am using item template and eval function in the gridview to display the records. Can I add a coulmn which is not in the table?
I have to add some columns which is not in the table and assign the values from code behind to that particular column
How do I get the column header of a datatable in a gridview which is displayed in a gridview I created. I need to get it so that I can use it as comparison.
View 1 RepliesThis is my datatable
[Code]....
I want to localize the columns names. Can you tell me how can I do this? I localized my .aspx pages, but I don't know how to localize the text in .cs files.
I have a dataTable filled with data.
And I want to insert new column into same datatable without affecting original data.
I am building a project in asp.net 4.0. My navigation will be database driven where i return a datatable from the db containing all the pages of my site, some will be top level while others will be children and sometimes children of children n-times. Im thinking of going down the nested repeater route and databinding from code behind, dynamically generating repeaters for children, but have read that this is not a best practice and should consider the listview control. Im wanting to build a list of links using an unordered list.
View 1 Replieshow can i sort the data in col of datatable or other way to sort
View 7 RepliesI have a datatable dt with 4 columns. I want to retrieve only distinct values from column1 of datatable.
How can I achieve this using c# code?
How do you add an extra column in a datatable which will be used for another query
View 3 Repliesi have a sum column in my datatable and want to add the values?
is compute a good method to use?
I have string value in the column of datatable.I would like to assign seq no to different value.if they have the same value, I would like to assign the same seq no.if there isn't has the value in the column, then assign a new seq no.how to do this?for example:
district no. district
1 hong kong
2 germary
3 canada
1 hong kong
using vb.net 2005.
I'm trying to a byte array column to a table but getting an exception:
<error>
datatype argument cannot be null
</error>
The code I have is:
[Code]....
Does anyone know the correct syntax for this?
I have a Datatable store in the Session. This Datatable has a column call Qty. I have one button on the page that will update the Qty. How can I update my DataTable Qty column?
[Code]....
I have a Gridview that I am trying to add Paging to, however when the 2nd page is selected all I get my EmptyDataText.
In reviewing multiple sites and forums they have stated to send your Datatable to a Session - What am I missing here?
ASPX Page:
[Code]....
Code Behind:
[Code]....
I have a DataSet comprised of two DataTables. One of the DataTables is further comprised of the results of two different SQL calls. I need to alphabetize the results of those SQL calls. After the seconds set of results is added to the DataTable I tried the following but the end result (displayed on the page) did not alphabetize the returned results. There was no error. Can anyone advise me please. 'programs' is the DataTable name, title is the column name.
programs.DefaultView.Sort = "Title ASC";
I am getting a datatable from the SQL Server. In SQL Server the column headers are fine (mix of Capital and Small Letters). But when i am getting it in the front end, all the column names are in lower case. How can i get the column names in original Case.
View 3 Repliesi use a datatable to populate my gridview, how do i retrieve database to datatable's column?
View 3 Repliesi have a column seq_no in datatable. if the column with data 2,4,5 how can i have the max number of the column. C#
View 5 RepliesI am binding a table to a gridview in asp.net as such
grdIssues.DataSource = mdtIssues;
grdIssues.DataBind();
The problem is I cannot then control the column width, asp.net seems to decided on it's own what width each column should be. Methods such as
grdIssues.Columns[0].ItemStyle.Width = 100;
grdIssues.Columns[1].ItemStyle.Width = 100;
don't work because the columns are created dynamically. I cannot believe there isn't a way to do this short of manually creating each column and filling each row.
How can i add same fields for columns in a datatable. I wan to make a datatable which repeate column name of same type multiple times, but dot net dont allow me to add that, but i want to do that hw can i do that?
table.Columns.Add("S.NO", typeof(int));
table.Columns.Add("DC", typeof(string));
table.Columns.Add("DC", typeof(string));
table.Columns.Add("DC", typeof(string));
table.Columns.Add("ST", typeof(string));
table.Columns.Add("ST", typeof(string));
table.Columns.Add("AD", typeof(string));
table.Columns.Add("AD", typeof(string));
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]....