Web Forms :: Populate / Add DataSet With Asynchronously Retrieved DataTables?
Jul 9, 2010
I need to asynchronously retrieve several resultsets which I store in DataTables and add these DataTables to a DataSet. When the final DataTable is filled and added to the DataSet the page must then continue processing utilizing this DataSet I have figured out how to implement delegates to asynchronously retrieve my DataTables but I'm unclear how to add them to a DataSet in a thread-safe manner. How is this best accomplished? Before processing I know how many DataTables there will be, so what is the best way to track the progress of the asynchronous retrievals and allow the page to continue only after I have all of the data?
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Oct 18, 2010
I need to asynchronously retrieve several resultsets which I store in DataTables and add these DataTables to a DataSet. When the final DataTable is filled and added to the DataSet the page must then continue processing utilizing this DataSet I have figured out how to implement delegates to asynchronously retrieve my DataTables but I'm unclear how to add them to a DataSet in a thread-safe manner. How is this best accomplished? Before processing I know how many DataTables there will be, so what is the best way to track the progress of the asynchronous retrievals and allow the page to continue only after I have all of the data?
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Aug 3, 2010
want to make relation between two datatable based on one column
this column is present in both datatables but name is diffrent and values are same
[Code]....
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Apr 1, 2011
I have 2 views in sql server and I create a dataset with those 2 views as datatables. Now I need to create a datatable and programmatically fill it with the other 2 datatables. Take the 2 datatable and create a third one in the dataset not create a third view in sql server.
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Apr 2, 2010
Does dataset store all its datatables' records into server memory if I just call one datatable from it?Lets make an example, a dataset with three datatables - tbCompany, tbCompanyStaffs, tbSalesOrderwhere tbCompany is the parent of tbCompanyStaffs. tbSalesOrder is an independant table.Does dataset load all tbCompanyStaffs records into the server memory as well when a class retrive data from tbCompany?
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Aug 16, 2010
I am looking to retrieve data from a database and assign those values to class objects which in turn will be turned into session variables. I am using an object datasource to retrieve the data from the database but I cannot find anywhere that shows how to assign these values to variables. The data is returned in a dataset. There is the added problem that there will be mulitple items returned which will have to be assigned to different arraylists of objects based on the a primary key in the database.
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Jul 10, 2010
Current code:
[Code]....
It seems that it doesn't have datasource that I usually do. How could I?
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Mar 24, 2010
I have always had problems with creating loops so here I go again.
I have a dataset populated with 1 column and multiple rows. What I am trying to do is create a page that will be used for emailing multiple users. The names will need to be separated by a semi colon.
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Mar 7, 2011
I need to bind my dropdownlist to my dataset that is returning application specific text values. But for purposes on that page, i need to assign the value to each one starting at 0 to the number of items returned from my dataset..
Example, if my dataset only returns 1 item, the value of that item needs to be 0
[Code]....
If my dataset returns 4 items, the value of those items needs to be 0 thru 3
[Code]....
Is it possible to assign values like that to a dropdownlist from the code behind?
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Jun 21, 2013
I've tried Populate ASP.Net DataList by binding DataSet Client Side using jQuery AJAX posted in [URL] .... while binding records in datalist using JQuery there is no problem, i want to bind image inside of the datalist. There is a field imgpath which stores image path. Now i want to bind the image which path is stored in the database using JQuery.
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Mar 3, 2011
My problem is as follows:I have a gridview that get populated from a stored procedure in my MS SQL database. This gridview has a column that is a link field that I click to navigate to a new page that should display the correct info in the relevant labels.So the gridview returns say five diffrent rows of companies (and this work great by the way) and lets say that the 'company name' is the link field column that I meantioned earlier. So now I the company name and this navigates me to the Company.Aspx page, which so far is all working well.What I cant seem to get right is how to pas the correct row of the the passed dataset to display in the correct label fields, here is a brief snippet of what I mean:
if (Session["objDataSet"] != null)
{
DataSet dsCurrent = (DataSet)Session["objDataSet"];
[code]...
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Dec 7, 2010
I've got a SqlConnection with a sqlquery that may not bring any results. On the rare occasion this happens, I have another sqlquery and another connection to the database. There has to be a better way to do this, no?
On a side note, is this best to close the connection after .Fill? I assume so, but haven't seen it used anywhere.
SqlConnection dbSqlConnection = new SqlConnection(--);
SqlDataAdapter dbSqlDataAdapter = new SqlDataAdapter(sqlquery, dbSqlConnection);
DataSet dbDataSet = new DataSet();
dbSqlDataAdapter.Fill(dbDataSet, "popGrid");
dbSqlConnection.Close();
if (dbDataSet.Tables["popGrid"].Rows.Count == 0)
{
SqlDataAdapter newSqlDataAdapter = new SqlDataAdapter(sqlquery2, dbSqlConnection);
newSqlDataAdapter.Fill(dbDataSet, "popGrid");
dbSqlConnection.Close();
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Apr 8, 2010
Is it possible to populate a listview with a dataset? I have a function that returns a dataset. Why im asking this is because my SQL is quite complicated and i can't convert it to a SQLDataSource...
Public Function getMessages() As DataSet
Dim dSet As DataSet = New DataSet
Dim da As SqlDataAdapter
[code]...
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Feb 12, 2011
populate dataset with countryCode, countryName?
[Code]....
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Jan 7, 2011
I have some Data returning from a Context. Data has being pulled by spCmsCategoriesReadHierarchy.
I need take all Data from Context and populate my DataSet. My final goal is to populate a TreeView Control with DataSet object.
[code].....
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Feb 24, 2011
How to populate google charts using ASP.NET Dataset/Datatable
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Sep 25, 2010
How do I populate a dataset with an Objectdatasource?
The reason is I have an Objectdatasource on a page which is populating a GridView ok.
I want to use a Dataset to control the DayRender of a Calendar Control and don't want to query the database again as the right date info is already in the Objectdatasource.
So can i populate a dataset with the objectdatasource ??
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Mar 25, 2011
i am trying to run this code, but even if it has somes results, it gives an exception saying that there are no Rows at positions 0.
DataSet ds = new DataSet();
SqlConnection conn = new SqlConnection();
conn.ConnectionString = (ConfigurationManager.AppSettings["Gulfcoast"]);
conn.Open();
SqlCommand cmd = new SqlCommand("SP_GetSavedInvestigation", conn);
cmd.CommandType = CommandType.StoredProcedure;
cmd.Parameters.Add("@rlname", SqlDbType.NVarChar).Value = ddsavedsearch.SelectedValue.ToString();
cmd.ExecuteNonQuery();
SqlDataAdapter da = new SqlDataAdapter(cmd);
da.Fill(ds);
if(ds!=null)
{
Criteria.Text = ds.Tables[0].Rows[0]["rl_criteria1"].ToString();
}
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Jun 1, 2010
My stored Procedure returns two tables say table1 and table2. When I try to fill the dataset, table1 is filling properly and table2 filling only one row of the table remaining rows coming empty. There is no error when I compile the code. And the output is an empty page.
Here the code I've used
SqlConnection cn = new SqlConnection(ConfigurationManager.ConnectionStrings["NorthwindConnectionString"].ConnectionString);
SqlCommand cmd = new SqlCommand("TABL", cn);
cmd.CommandType = CommandType.StoredProcedure;
SqlDataAdapter dad = new SqlDataAdapter(cmd);
DataSet ds = new DataSet();
dad.Fill(ds);
GridView1.DataSource = ds;
GridView1.DataBind();
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Jul 30, 2010
I need to compare 2 DataTables that do not necessarily have the same structure. One dataTable is the master (dtDB), the second dataTable (dtFORM) is what will have the changes, if any, but not necessarily all of the columns of dtDB. In both tables the first column will be the primary key and all columns that dtFORM has, dtDB will have.
There is another DataTable (dtResults) that will flag the differences
This is where I am at so far:
[Code]....
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Mar 29, 2010
I have two DataTables, with Different Columns. Some of the Columns are same between them.
i am looking to do this.It is also refered to as MINUS and is simply all the rows that are in the First table but not the Second.
These three colums are same between the two tables.
string[] strCols = { "CustomerID", "CustomerName", "CustomerCity" };
I tried this but it seems to return all the Rows from the Table1.
[Code]....
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Nov 10, 2010
I am creating varying number of datatables depending on user submitted query. I want to dynamically create collapsible panels for each datatable.
<asp:panel id=pnltitle1>dt1.rows(first row)</asp:panel>
<asp:panel id=pnlcontent1>dt1.rows(remaining rows)</asp:panel>
<asp:panel id=pnltitle2>dt2.rows(first row)</asp:panel>
<asp:panel id=pnlcontent2>dt2.rows(remaining rows)</asp:panel>
<asp:panel id=pnltitle3>dt3.rows(first row)</asp:panel>
<asp:panel id=pnlcontent3>dt3.rows(remaining rows)</asp:panel>
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Aug 2, 2010
I have two datatables with datavalues
datatable A
ID data1 data2 data 3
datatable b
ID data4 data5 data6
I would like to merge datatable A and datatable B like so the resultset is like this in tableC
ID data1 data2 data3 data4 data5 data6
When my code finishes the column names are in this format but the data from dt b is pushed down into new rows instead of added on as new columns.
i used merge method but it giving like the bellow
example:
ID data1 data2 data3 data4 data5 data6
1 X X X
2
3
4
5
1 X X X
2 X X X
3
4
5
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Apr 30, 2013
if i want to get multiple values from database and pass this dataset to another page can we use session to store the dataset values..i knw we can..but some one says that its not a gud approach..this will cause server process down..is it true?if it so then wat are all the other ways to do that?
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Feb 22, 2011
i retrieve a data named semesterstartdate, after retrieving i neede to add day to the data. How can it be done?
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