Data Controls :: Get DataType Of Column DataTable
Aug 18, 2015How to get Column Data Type in Autogenerated Grid View ?
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C# - Changing DataType Of Column In DataTable From DateTime To String
Nov 24, 2010I'm loading data from my database into a DataTable, and one of the columns is a date field.
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I'd like to format that column so that instead of containing a full date, it will be formatted like "MM/DD/YYYY".
I've tried looping through each row in the table and changing the cell for that column, but I get an error saying that the string isn't a valid DateTime object.
I tried changing the column DateType to a string, but I get an error saying I can't change the DateType after the table is filled.
How can I do this? This seems like such a simple thing, but I'm having so much trouble with it.
DataSource Controls :: Datatable Data Types And Command Parameter Datatype?
Apr 7, 2010I am using VS 2008.I am building a datatable of records to be inserted into a SQL Server 2005 table.
The program loops through this table and builds a SqlParameter for each DataColumn in the datatable. The SqlParameters are used in the SQL Insert statement.
The field I am having a problem with is of type 'bit' in the database table and has no default value and cannot be nulls. The field is called 'Active' The meaning of this field in the application is Boolean i.e True or False. When inserting the record, I wish to default the field to "False".
When I define the columns in the datatable I am forced to use the following code to build the datatcolumn containing the boolean field i.e. dtcActive.DataType = GetType(Boolean) as there is no GetType(Bit)
Dim dtcActive As New DataColumn("Active")
dtcActive.DataType = GetType(Boolean)
dtcActive.Unique = False
dtcActive.AllowDBNull = False
dtcActive.DefaultValue = False
dtProviderDayDetails.Columns.Add(dtcActive)
However, when I build the SqlParameter I am forced to use this:
If field.ColumnName = "Active" Then
prm.SqlDbType = SqlDbType.Bit
prm.Value = "False"
End If
This is because there is no SqlDbType.Boolean. The problem I have is there is no value I have been able to give the SqlParameter that is accepted by the Insert statement. It complains that the boolean field cannot be null on Insert.
Forms Data Controls :: Set A Column In A DataTable To Be A Primary Key For An Existing Datatable
Apr 2, 2010If 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 RepliesForms Data Controls :: Column With Nvarchar Datatype Storing The Date?
Aug 16, 2010I have a column with nvarchar datatype storing the date. I am using a Gridview to display and edit data of that table. Now when I update the table the nvarchar column containing date in the format mm/dd/yyyy gets converted to Jun 9 2010 12:00AM format. I don't want this to be happening. I don't understand why this is happening as I don't have datetime column.
View 4 RepliesDataSource Controls :: Alter Script To Change The Primarykey Column Datatype?
Feb 22, 2010I am using SQL SERVER 2008 database. I have a table Customers in which the CustomerID column is had datatype INT intially but due to increase in Customers the number range is exceeding which may cause error arithmetic overflow of data. Hence I thought to modify the datatype from INT to BIGINT and wrote an alter script but when I ran the script it failed. Hence provide me in creating alter script for the updating the datatype of the primarykey column for the Customers table.
View 2 RepliesADO.NET :: Find The DataType MisMatch Row In DataTable?
Jan 11, 2011[Code]....
How find the DataType MisMatch Row In DataTable.
Forms Data Controls :: Transpose Datatable Row To Column?
Feb 24, 2011for below i dont want to use sql Query bcz data is not coming from sql/oracle database.
its comeing from propertary database and data is in datatable .
This is datat table format :
[code]....
DataSource Controls :: Changing Data Of Same Value In The Same Column Of A Datatable?
Mar 18, 2010I have a datatable that looks as follows:
Make,Ford,0
Model,Fusion,0
Year,2010,0
Make,Ford,1
Model,Focus,1
Year,2010,1
I'd like to loop through each row and replace all the values of the same type in the 3rd column with a different value.
So for example I would change all the 0 to 1234 and all the 1 to 1235. So I'd end up with:
Make,Ford,1234
Model,Fusion,1234
Year,2010,1234
Make,Ford,1235
Model,Focus,1235
Year,2010,1235
Whats the best way to do that ?
DataSource Controls :: Convert Datetime Value Which Is As Varchar Datatype To Another Datetimeformat As Varcharchar Datatype
Jun 25, 2010convert below datetime value which is as varchar datatype to another datetimeformat as varcharchar datatype
2010-05-19T13:05:08.6Z
DataSource Controls :: Move 1 Column Values To Another Column In Datatable?
Mar 31, 2010i 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).
Forms Data Controls :: Create A Column While The Datatable Is Being Filled?
Jun 17, 2010What I have is a datatable being constructed from Sharepoint API. We dont need to worry about the sharepoint api.The code where it fills the data is as follows
Datatable dt = new datatable();
Sharepoint.fill(dt);
Write what I want is as the dt is being filled is to create another column called full path which has a formula col1+col2I dont want to do a for next loop after the dt is filled . very slow !
Data Controls :: Column Named Link Already Belongs To This DataTable
Mar 26, 2016I am using the C# code you posted in the link below,
[URL]
but when I run it I am getting the error:
"A column named 'link' already belongs to this DataTable: cannot set a nested table name to the same name."
Forms Data Controls :: Change Data Column Value Format From Mm/dd/yyyy To Dd/mm/yy In Datatable
Mar 14, 2011I 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?
Forms Data Controls :: Transform Datatable To A Gridview With A Hyperlink Column?
Feb 10, 2011I want to transfer data from datatable to a gridview with a hyperlink column. But dont know how to do.
I attach my code as below, what i want to do is to output 2 columns in gridview, and the first column should be a hyperlink. However, now the first column still shows nothing.
Web page code:
[Code]....
C# code:
[Code]....
Forms Data Controls :: Gridview Bound To DataTable - How To Enable CheckBox Column
Jul 16, 2010Below is the code behind for a simple aspx page. The web form contains one GridView (GridView1) and one label (Label1). I create a Data Table, then add a row to the table. I then DataBind my GridView to the DataTable. (so far so good) When I run the page I do see the GridView and the single row of data. However the checkbox shown is not enabled, meaning the user cannot uncheck or check it. (As if was not enabled)
Imports System.Data.SqlClient
Imports System.Data
PartialClass test
Inherits System.Web.UI.Page
ProtectedSub Page_Load(ByVal senderAsObject,ByVal eAs System.EventArgs)HandlesMe.Load
CreateDT()
EndSub
PrivateSub CreateDT()
Dim dtAsNew DataTable
Dim col1AsNew DataColumn
[code]...
Forms Data Controls :: Get User Checked Items And Put With Product Name In The Same Datatable Column?
Jan 11, 2010i build some shopping cart. I have Datalist that display products from SQL table (id, productName, productPrice) and "Add" button. After the user click the button the product appear in the GridView (im using Session DataTable) until now all fine and work greate! in every product i need to add 2 checkboxlist from SQL tables (its some extra to the product). How can i get the items the user was checked and put them with the product name in the same datatable coloumn? the aspx code:
[Code]....
this is the code behaind:
[Code]....
Data Controls :: Add New Column To A Existing DataTable With Data
May 25, 2013How to add new column to existing datatable which is inside dataset using C# .Net ....
View 1 RepliesForms Data Controls :: How To Create Rows And Column Using Datatable Gridview Itemtemplate With Multi Header
Feb 23, 2010How to create Rows and Column using Datatable Gridview Itemtemplate with multi header I need to create Datatable Gridview Itemtemplate fixed rows and column such as 7 rows and 7 columns
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SQL Server :: Datatype Of One Column In Microsoft?
Nov 16, 2010I have a tabe related to songs which has columns like songID, album, Artist, track etc. I want the data for track to be entered in the format 1/2, 2/2 like this. What shpuld b the datatype of this value? If I'm entering a new data or updating the columns from a web page how can I check the track textbox to enter the correct value? Can I use any validation control? if so how can i use it?
View 6 RepliesWeb Forms :: Bind TreeView To XML-DataType Column In SQL?
Mar 8, 2011I have a Table in SQL Database, it only has one sell and its xml type.
I need to bind that xml to TreeView Control, and since I can't bind use sqldatasource as a datasource for the treeview and i cant use the XmlDataSource to read from the database...
How To Sort The Data In Column Of Datatable
Feb 26, 2010how can i sort the data in col of datatable or other way to sort
View 7 RepliesADO.NET :: Retrieve Data From Database To Datatable's Column
Feb 21, 2011i use a datatable to populate my gridview, how do i retrieve database to datatable's column?
View 3 RepliesWeb Forms :: Converting Byte (msWord Content) Datatype To String(text) Datatype?
Jan 21, 2010 i am store ms word resume to image(BLOB) data type in sql server 2005. now i want to display this resume in HTML page or in text area. and for that i use
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DataSource Controls :: Sorting Column In DataTable
Jul 26, 2010I 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";