how to sort a datatable (dataview) so that the second column is ascending but nulls are last.
I'm trying to do the following Date1 ASC, DATE2 ASC (but if DATE2 is null it is last in this Date1 group)
Note: Date1 can never be null so a Date2 that is null should still be grouped in with its Date1.
I have a button that I would like to click and will put my Listview list in Descending order. However; when I click on the button nothing happens.
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I have a datatable,columns are(User_id,Name,Address,DOB)
values like(12,abc,delhi,22/2/2000)
(14,pqr,mumbai,13/3/1989)
(8,klm,banglore,17/5/2001)
(9,asd,pune,12/9/1999)
Now I want to sort these rows on DOB in descending order..how can i do so?
I have a datatable which contains the summery row as well. I just assign the datasource property of a gridview and call databind method to fill and display the records.
Now, when I applied sorting through dataview to the gridview, the sorting happens along with the summery row, which is a normal behavior. As a result the "Total" - column took place inside the data some times. I want to prevent this.
The best way out for that can be done by creating the summery row at grid view row databound. But unfortunately I could not change the datatable as per this requirement.
Can the dataview sorting exclude the last row of the datatable through any process?..
How do I sort a data table based on a particular column which has integer values in ascending order?
I wrote this:
'Sort the datatable based on sequence id leadtable.DefaultView.Sort ="Id" But it doesnt seem to work Datatble is defined as:
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Actually i want to ask which is the best for sorting in Asp.Net is it DataView.Sort Method or List<Object>.Sort() method.
View 1 RepliesI want to sort by IsTop ascending, meanwhile then by jobId descending
query = query.OrderBy(p => p.IsTop).ThenOrderByDescending(p => p.JobId);
how to do it? I know the reverse
query = query.OrderByDescending(p => p.IsTop).ThenBy(p=>p.JobId)
syntax works, but not what i want What i want is actually whatever situation IsToped Item will be at top!
I have a gridview with some columns and I need to sort the gridview by a date-column. But it doesn't sort it correctly. This is the code I use:
dt.DefaultView.Sort = "Meldingsdatum asc";
gvOutlookMeldingen.DataSource = dt;
gvOutlookMeldingen.DataBind();
gridview is always Ascending?
View 5 RepliesI have a simple dynamic gridview with following code -
GV = new GridView();
I have a page which lists all the files in a particular folder (all PDFs), using a data-table and gridview.
I'm currently sorting this table by the filename (by using a dataview), which isn't that helpful, and I want the gridview of files sorted by the file created or file modified date (as recorded in Windows).
If that's not possible, a second option would be to extract the date from the file name string (no problem doing that), and sort the dataview/datatable or gridview based on that. Example Filename: DailySalesReport-1-15-2010. My only hangup with this is how do I sort on date, when it's a string value? Convert to date? How would I sort the whole dataset based on this converted value?
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i read Matt Berseth article also i downloaded this source. But i can not do sorting event. Everything is ok but sorting is not working.
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I'm looking to find some command or control that will change fields in a detailsview insert a 0 if there was no data inserted into them. Some example code from my boundfield is:
<asp:BoundField DataField="Assignment_Travel_Time"
I have been struggling with an issue with the Detailsview that I'm using only sending null values to my sqldatasource update. I have seen people on the forums with this problem before but none with my specifics. Essentially, I'm creating a master/details scenario but using ajax updatepanels. A Gridview holds the master records and upon selection of that record the Detailsview is populated and brought up in a modal box. This works fine to display the data in the Detailsview. But upon update all nulls are sent back. I've evaluated the NewValues collection in the Detailsview OnItemUpdating event, and see all nulls. I read a posthere that talks about the KB article KB941155; which states a problem with .NET not being able to find a bound control in template situations:http://support.microsoft.com/kb/941155I wasn't sure if this applied to me since I am using Master pages. A couple of other notes. I am using BoundFields in my Detailsview, as well as a sqldatasource with a stored procedure updatecommandtype. The DataKeyNames are being set correctly as well.
View 6 RepliesMy filter Expression was working fine with filtering by Control Parameters.When I added the Phone Parameter it went nuts - with the Phone Parameter the GridView just Comes out blank upon loading the page (without it would show Select * from Individuals)Is it because the phone field is populated with numbers? Don't get it.... In the SQL server the 'phone' field is set to 'varchar(30)' and nulls are allowed.here is my code:
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Just spent about 8 hours googling and looking through this forum for a solution on how to make sure that I can dynamically sort. Here is the situation.
I have 1 Gridview that displays 10 different scenarios based on what button is clicked.
I am also returning only top 10 records. I am doing all of the data binding pragmatically. So I have BoundFields, HyperLinkFields etc.
I also want to sort some records. When I change DataSource SQL statement the gridview somehow remembers what the last sort value was and it errors out saying that value "x" cannot be sorted because it does not exists.
I tried this:
Tried setting gridview1.sqldatasourceid = null; gridview1.allowsorting = false; gridview1.databind();
Here I get an error that says that the data source does not support sorting? Doesnt it say gridview1.allowsorting = false;
I also tried gridview1.sort("", SortDirection.Ascending); This does nothin... except query my database one more time because i have a onSorting event that looks like this:
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Here is an example of just one of those SLQ statements inside GetSQLQuery:
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How to sorting(ascending and descending ) the gridview when i click the header text on gridview in asp.net
View 1 RepliesHow can i make a gridview always started ascending, depending on one of my columns? considering that is Populate it from database SqlDataSource
View 1 RepliesI want to sort the string which is in the format given below15% Test;15% Sear;40% Santhosh;30% Jeeson;
The output that I am expecting is
40% Santhosh;30% Jeeson;15% Sear;15% Test;
I wrote the following code but it does not work .
string str = "15% Test;15% Sear;40% Santhosh;30% Jeeson;";
Console.WriteLine(str);
DataTable dt = new DataTable("SortBenchMark");
DataRow dr;
dt.Columns.Add("Weightings", typeof(int));
dt.Columns.Add("BenchMark", typeof(string));
string weightings = string.Empty;
string BenchMarkName = string.Empty;
foreach (object o in str.Split(';'))
{
if(o.ToString().Length > 0)
{
dr = dt.NewRow();
dr["Weightings"] = Convert.ToInt32((o.ToString().Split('%'))[0].ToString().Trim());
dr["BenchMark"] = (o.ToString().Split('%'))[1].ToString().Trim();
dt.Rows.Add(dr);
}
}
dt.AcceptChanges();
DataView dataview = new DataView(dt);
dataview.Sort = "Weightings DESC,BenchMark Asc";
string final = string.Empty;
foreach (DataRow drow in dataview.Table.Rows)
{
final += drow["Weightings"].ToString().Trim() + "% " + drow["BenchMark"].ToString().Trim() + ";";
}
Console.WriteLine(final);
Console.ReadLine();
Can a dataview be declared as public?
Dim dvEditTreatmentType As DataView = New DataView(dsTreatmentEndDate.Tables(0), "IsNull(DialysisEndDate, '') = ''", "", DataViewRowState.CurrentRows)
can this be declared as public Dataview? is there a way to do it?
What is the difference between dataview and datarowview?
What is the use of datarowview?
HOW 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 know how to do this in a datatable but I would just like to learn how to do it in a dataview.
I have a dataview which is used to populate a gridview. It has the following column
userid Location
123 New York
124 Chicago
125 London
Now, I would like to know how to determine the 124 row and highlight it to a blue in a dataview used to populate a gridview. kindly note, i can do this in a datatable but not a dataview. I would like to learn how to do it in a dataview.
converting a DataView to a DataSet?
I have a DataSet 'programs'. I want to sort if before passing it to a user control where it will be rendered.
I created the DataView and sorted it successfully like so:
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The line of code to pass my old (unsorted) dataset to the UC is like this:
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What is the syntax for passing the dvPrograms to the UC in a similar manner?
I have the following code in place:
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and the following stored procedure:
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The Dataview control is not appearing when the page is loaded. Has anyone any ideas ?