Add One DataView To Another In C#?
Jun 22, 2010
I need to add two DataViews together to have one Dataview that can then be bound to a Repeater.
I am plugging into someone else's API so I can't change the way the data is retreived at the SQL Level.
So essentially I want to do this:
DataView dView1 = getActiveModules();
DataView dView2 = getInactiveModules();
ModuleView = dView1 + dView2;
rptModules.DataSource = ModuleView.Tables[0];
rptModules.DataBind();
The two schemas for the views are identical just retrieving active and inactive modules.
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Jul 30, 2010
What I want is to filter the dataview so I get top 10.
I googled it and found out that I had first to sort the dataview. Then add a column (int) to datatable. This column I then made a AutoIncrement on......
This works fine - I can see in the codebehind that it adds a column to the datatable that I called AutoInc.
Then make a RowFilter on the dataview - here it goes "wrong" for me.....
When using the line
datVie.RowFiler = "AutoInc < 11";
and bind it to a gridview I don't get a error - but it also don't show me any rows in the gridview...... If I comment the line out - I get all the rows in the dataview..
Can anyone see in my below code what is wrong?
[Code]....
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Mar 1, 2011
I have a DataView resulted from a query as below
Title
Return Type
The Inception
1
NFS
2
Tron Legacy
1
Documentary
3
Roadrash
2
I want to pass this object to a method which modifies it using linq query to return the Dataview object as below(without using loops anywhere in the code)
Title
Return Type
The Inception
Movie
NFS
Game
Tron Legacy
Movie
Documentary
Others
Roadrash
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Jan 29, 2010
When i try to sort my table manually, i receive this error:DataTable must be set prior to using DataView.The code is:
protected void GridView1_Sorting(object sender, GridViewSortEventArgs e)
{
DataTable sourceTable = GridView1.DataSource as DataTable;
[code]...
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Jul 18, 2010
I have a DataView which filters
inputView.RowFilter = "isnull(" + ID1 + ",'')<>'' and isnull(" + reason + ",0)=0";
after this filter i have to update "IsVerified" column of inputView to "1"
Is there something in LINQ to execute the following?
inputView.RowFilter.ForEach(x=>x.Field<IsVerified> =1);
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Jan 18, 2011
I have a DataView which has been populated with a list of files from a database table. I want to iterate through the DataView to see if there are any files there of a particular type, and if so, do something with that record, and then remove it from the DataView.
I've coded this as follows, but there's something missing - I can iterate over an object and then remove an object from it, since that will affect the iterator.
DataView dv = new DataView();
dv = ds.Tables[3].DefaultView;
dlFiles.DataSource = dv;
dlFiles.DataBind();
for (int j = 0; j < dv.ToTable().Rows.Count; j++) {
if (dv.ToTable().Rows[j]["FilePath"].ToString().ToLower().Contains(".pdf")) {
//do something with this record and remove it from the dataview
}
}
As a note, dlFiles is a DataList used to display the the items in the DataView. The files removed are displayed differently, and so should not be referenced when iterating through the DataList.
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Feb 25, 2010
I have Dataset with Data table with unsorted record i used the RowFilter for Filtering the Record like below
DatasetStudent.Tables[0].DefaultView.Sort = "Column Name"
Now i have to Pass the Dataset DatasetStudent with sorted record to Report how i convert the default view to Dataset.
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May 7, 2010
How to select top n rows from a datatable/dataview in asp.net.currently I am using the following code by passing the table and number of rows to get the records but is there a better way.
public DataTable SelectTopDataRow(DataTable dt, int count)
{
DataTable dtn = dt.Clone();
for (int i = 0; i < count; i++)
{
dtn.ImportRow(dt.Rows[i]);
}
return dtn;
}
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Feb 3, 2010
using Previeww 6 of Ajax....
I'm attempting to put a modal popup in each row of a dataview as shown:
[code].....
but the popupcontrolid cannot be found. I have checked the Dom and it has been created but $get cannot find it.
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Oct 28, 2010
I have a sorting issue with DataView.
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Mar 21, 2011
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();
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Feb 2, 2011
I want to check that the row index I specify is below the row count so it doesn't throw the error
Index 2 is either negative or above rows count.
how would I achieve this with my code?
Using connection As New SqlConnection(connStr)
Dim command As New SqlCommand
command.Connection = connection
connection.Open()
Dim a As New SqlDataAdapter("SELECT top(3) name, (SELECT TOP (1) ImageId FROM Images WHERE(productid = products.Id)) AS imageId FROM Products WHERE beginnerdiscount = '1' ORDER BY Dateadded", connection)
Dim s As New DataSet()......
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Nov 6, 2010
What is the problem:
[Code]....
Not stored in the database.
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Jan 24, 2010
I have a DataView object with productID and productName,i get all items from Products Table and store them in Cache.I want to get items that user bought in order he bought them without using another query or joining tables. ie.
Products DataView
1. Foo
2. Foo2
3. Foo3
Filtering to ProductsBoughtByUser using RowFilter (productID in (1,3))
UserProducts DataView
1.Foo
3.Foo3
Now user first bought Foo3, how do i reorder items based on correct ( chronological ) Array. ie 3 1
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May 24, 2010
Does anybody have an example on how to query a dataview and populate a dropdown? I'm having a hard time doing this:
[Code]....
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Jul 26, 2010
I am using VB. ASPNET2008 to develope Web Application. I am not sure whether to insert control DATAGRID or DATAVIEW. Also, what Reference Library am I supposed to use in order to use the Control.
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Sep 27, 2010
Is there a straightforward way to create a dataset after querying a dataview? The query itself returns DataRowView objects, which I cannot get to work with CopyToDataTable().
The query looks like:
Dim dvQueryView As DataViewdvQueryView = (dataview object of large dataset)
detailTableQuery = From rowView
As DataRowView
In dvQueryView _
Order
By sSortOrder _
Select rowView _
Skip nQuerySkipRow _
Take nQueryCountRows
I only want a small selection of records from the large dataview and use those to create a smaller dataset. The large dataset stays in place while multiple views are created from it, and then from those views I want to create the smaller datasets.
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Apr 7, 2010
How to display Top 10 Records using DataView Or DataSet, Below is my code. I am using .net 2.0 and i don't want to Modified in my SQL query.
Dim ds As New DataSet
ds = tv.GetSearchLatestEvtHosting("", "", "", "", "")
Dim dtvCust As DataView = New DataView(ds.Tables(0))
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Jan 30, 2010
I have a json service method that returns an object with two properties. The first property is called Rows and contains the list of objects I want to bind to the dataview. The second property is TotalRowCount. It is a paging method. How can I tell the DataView to bind to the Rows property? This is what I have so far...
[code]....
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Feb 11, 2010
I'm using Sys.UI.DataView and i have input of type text. I bind this input using live binding syntax and it works, but i want to add to this input autocomplete funcionallity.The problem is that autocomplete extender needs server side asp:TextBox and i can't find how to implement livebindng on this server control...
<asp:TextBox runat="server" id="txtTagsEdit">{{Name}}</asp:TextBox>
.... this do not works.
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Mar 17, 2010
I was wondering if it is possible to assign 2 variables to DataView.RowFilter. if it is, how do I code it.
I have tried this:
[Code]....
but i got this error
Missing operand before 'and' operator error
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Mar 28, 2011
I need to handle a datatable or dataview in the code below
private
void SetListDataSource(ListControl
lc, DataView d,
string valueField,
string
textField)
[Code]....
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Jan 1, 2010
I'm just learning MS ajax and am having problems getting a relatively simple test to work. I'm attempting to call a web service (of the .asmx variety) to return a very simple 3-column table to render in a dataView in an .aspx page. I've successfully created a working service and can by stepping through the service code it's getting the data correctly. The problem I'm having is that it stops with an exception in MicrosoftAjaxDebug.js on this line:
[Code]....
where my user_table contains 3 columns: user_name, user_key, user_ID. Real simple.My test.aspx page to get this data looks like this:
[Code]....
One more thing, I'm a little confused between the two downloads I've found, "MicrosoftAjaxLibrary_Preview6.zip" and "AspNetAjaxLibraryBeta0911.zip". From what I can tell, the latter contains all the old Ajax toolkit gadgets as well as the MS Ajax scripts. Is the MS Ajax download just a refresh of the ajax scripts in the Asp.Net ajax library? I've installed and am using the preview 6 scripts for my website.
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Aug 10, 2010
I 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();
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Feb 18, 2010
I have written the following data binding code:
[Code]....
This is in the codebehind of a page containing a gridview. The gridview has been customized to include two hidden fields hfsearchtext and hfsort that are used to search my database table and return results to the gridview through the use of a DataView.
As I'm new to this type of construct, can someone walk me through the code above? I receive an error message stating that the Value of System.Web.UI.DataSourceSelectArguments cannot be converted to an integer. How to rectify this error?
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