How do I extract a single value from a single column in a single row in a dataset?
First of all, thank you to everyone who takes time to answer basic questions in this forum. Your patience is deeply appreciated. For the past day, I've been trying to figure out how to access a single value in a row of a data set. The data layer tutorials by Scott Mitchell are helpful, but I still can't figure out how to extract a single value without looping through the data set. By passing a Client_ID to an instance of my data adapter, I am able to return a unique row that contains a column labeled Family_ID. However, I can't figure out how to access the value of that column on...How can I get the value of one single column from a DataSet/DataView?
I have a DataSet or DataView that contains a bunch of info.
I can filter down to one row using .RowFilter on the DataView.
I want to simply populate a label with the string value of column "A" for example.
This should be easy, but I am struggling with it.
Well a dataview is going to give a Row of data....
It's up to you to just bind or fetch the single column that you are looking for....
Here is an example of some code that I use to fetch from the ASP.Cache object a readonly dataview....
Please see this post: http://forums.asp.net/t/1069245.aspx
Thanks,Qin Dian TangMicrosoft Online Community SupportPlease remember to mark the replies as answers if they help and unmark them if they provide no help....Getting a Single Value From a DataSet
This seems like such a silly question, but I haven't found the answer yet.
How do I get a single value from a DataSet? Like, if the DataSet has a table "TableX" which has a field/column "ValueX", then how do I get "ValueX" for a given row? I've only been using DataSets to bind whole columns and stuff thus far.
If you are returning a 1x1 result (e.g. SELECT Count(*) FROM Table1), then you should look at using the .ExecuteScalar() method instead of using a DataSet. You can find it on all of the providers (SqlCommand, OleDbCommand).
Incidentally, have you ...Getting value of a single column
I am new to this group and Powerbuilder. Therefore, any help would be
greatly appreciated. Here is my situation:
I have a datawindow (dw_trafficmarkets) and I would like to get the
value of the "Mktname" column for all the rows in this datawindow. Can
anyone help me?
* Chicago *
* New York *
* Atlanta *
* Etc. *
I need to get all the values from the above data window and then use
them to select a list of products from a table where the markets equal
the markets con...Choosing between two column values to return as single column value
I'm working on a social network where I store my friend GUIDs in a table with the following structure:user1_guid user2_guidI am trying to write a query to return a single list of all a users' friends in a single column. Depending on who initiates the friendship, a users' guid value can be in either of the two columns. Here is the crazy sql I have come up with to give what I want, but I'm sure there's a better way... Any ideas?SELECT DISTINCT UserIdFROM espace_ProfilePropertyWHERE (UserId IN
...Getting column value from a gridview control
I have a grid view control and has one datakey and other columns. In my grid view I have an Edit Control and a Delete Control.
1) When I press Edit control, I am getting datakey value as expected. But I am not getting other column name i.e. pdf_filename
2) when I press Delete control, I should get the datakey value. But I am not getting
I am using c#
Please help me
Could you be a littlemore elaborate?
like how have you bound your grid?
3.Using BoundFields.Regards,NaveenPlease remember to click Mark as Answer on the pos...Get single value from Dataset ??
How can I get a single value from a dataTable in a DataSet.
I would like to set a variable like this
int companyId = ...value from dataset...
method for filling dataset
private void fillEmployeeInfo(string empId)
string emplSql = "SELECT forename, surname, title, photo, email, employee_id FROM Employee WHERE employee_id = " + empId;
string companySql = "SELECT Company.company_id " +
"FROM Company INNER JOIN Employee ON Company.company_id = Employee.company_id " +
"WHERE Employee.employee_id = " + e...Matching each value out of multiple values to single column value
Hi, @whoposted in stored procedure holds value "agent builder owner" ( please note the space in between) My column POSTED_BY always holds one and only one value out of above 3.Example: POSTED_BY owneragent etc... If All / any of the value hold by @whoposted matches with value of POSTED_BY column, i want to show that row in gridview.( Also, please note, str may hold different values depending on user selection. For example, it may ...Get Value from Hidden Column in Gridview control
I have managed to get the value from my hidden field by using the SelectedIndexChanged event and the following line of code:string keyValue = GridView1.SelectedDataKey.Value.ToString()I would however prefer to get access to the hidden column value on the GridView1_RowDataBound event, so that I can then evaluate each row against the hidden columns value and decide whether or not to display the edit button in each row. Can I do this a different way?
You can use e.Row.DataItem("field name") in the RowDataBound event - as long as the field is in your SQL statement doesn't m...Get the column value from a DataGrid
Hi,I have a datagrid with 6 columns. I am trying to retrieve the value of a column and pass it to a variable. I am not sure what I doing wrong here since the code I am using is not pulling any value from the column. This is an example of what I am trying to do. Dim column_value As Stringcolumn_value = DataGrid1.Items(0).Cells.Item(4).Text Please correct me if I am wrong. Thanks.
Use a GridView control instea...Binding a single column value from a dataset to a label
I have a class that handles my database calls. In that class I have a function that returns a dataset containing a single row with about 12 columns. Examples of columns are first name, last name, ect. I have several lables on the page that I need to bind a single column value such as first name to the lblFirstName control on the page. I have several datasets on the page. How do I excplicitly bind the dataset by name a label? C# or VB.NET code will be fine.
Here is a sample.
Dim ds As New DataSet()
' Code to get value for the dataset
...How to avoid error getting value from sp when column is not present....
I have a stored procedure that returns some data, however as it is an aggregate function if the data is not present then the columns will not be returned. I am trying to get data out of this dataset and place it into labels on a page however i get the following error:
lblAwaitingPosession.Text = miAmountSet.Tables.Rows["Total Amount"].ToString();
Column 'Total Amount' does not belong to table Table.
How do I check for the existence of a column before accessing it so that I dont run into this problem?
Any help much appreciated...Regards,
...How do you get a column value from a gridview column
How do you get a column value from a gridview column in asp.net 3.5?
I tried this but it does not work.Dim myRow As GridViewRowFor Each myRow In GridView1.Rows Dim strTest As String = DataBinder.Eval(myRow.DataItem, "EmailSubject")Nextif I change the column to a Template field then EmailSubject = myRow.FindControl("EmailSubject") works but I was hoping for a more direct way of getting a column value
EmailSubject = myRow.Cells(4).Text also works but is not flexible if I change the column orderThanks
Try: Dim strTest As String = CType(...