Populating DataRows In A Datatable Using An SQL Query?
Dec 14, 2010I am populating DataRows in a Datatable using an SQL query. How can I population the first row with a C_ID value of 0000 and C_Name field with "Select" ?
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I am populating DataRows in a Datatable using an SQL query. How can I population the first row with a C_ID value of 0000 and C_Name field with "Select" ?
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I need to add rows to an existing (maybe) datatable in a dataset that combines the IIS6 index search with my own sql table. I keep getting object reference errors.
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IEnumerable<DataRow> query = (from obj1 in objeDC.tmpPolicyRenewals.AsEnumerable()
where obj1.AgentCode == "Admin"
select new
{
obj1.Product,
obj1.PolicyNo,
obj1.Insured,
obj1.EffDate,
obj1.ExpDate,
obj1.GrossPrem,
obj1.Status
}) as IEnumerable<DataRow>;
Getting null value. whats error ?
When trying to populate a Chart control in asp.net 4.0, I cannot seem to get it to show the data in the way I want to.
This is the table (DataTable) I want to DataBind to the chart control:
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I want to represent this table in a chart control. How can I do this and make my code dynamic?
When I populate a gridview with a linq to sql datasource, I get the results I expect, however, when I try to use a linqToSQL query and try to databind that to the gridview, I get no records returns.
My Linq looks fine and I don't recieve any errors, so if someone could take a quick look and point out an obvious flaw.
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My application uses DataRows and they are not serializable. Is there any workaround for the same?
View 1 RepliesI want to make some check before I add a list of data
so I create a temp table
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and this is the qeury I retrive from DataBase
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so now I get 2 data resultI just want to knowhow to compare these 2 data result?
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then now allow to add new data...
I am trying to use like to query my datatable. The datatable has confirmed records and the column name is confirmed to be correct. The problem is, if I pass in the case sensitive word "FRANK THOMAS", the query returnes results. The problem is, I do not want to have to deal with the user typing in "frank thomas" and having it fail.Here is the code.
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I have a SQL query returning a datatable which returns data such as:
ID, Email adress, logon name,
1,joe@bloggs.com,jb1
2,joe@bloggs.com,jb2
3,joe@bloggs.com,jb3
4,bloggs@joe.com,bj1
5,bloggs@joe.com,bj2
6,bloggs@joe.com,bj3
I need to send an email to ALL the above unique email addresses in column 2, listing all the logons for that person. My question is, in terms of best practice, Whats the best way to do? Should i either
1) Query the local datatable in the application, if so how do i query a local DataTable object?
2) Modify my initial query to return all the unique email addresses and then again query to retrieve the logons for that email address inside a for loop for eaxmple.
Was trying to minimise the hits to the database, whats the preferred way to do something like this?
how to convert a linq query to a datatable
this is my query
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My web application calls a stored procedure and stores the result in a .NET datatable. I'd like to use this datatable and join it with other tables in my database. Is this possible?
Would the best way to set this up be to create another datatable and then use a dataview to join both datatables?
how to extract DataTable or DataSet from Linq Query or List. e.g I have linq query like this
MyDBpDataContext dcSp = new MyDBpDataContext();
dcSp.myProgrammSP().ToList();
I wrote an Sp which sends a Table as result and I have code which is already using DataTable So I want to convert this result in DataTable.
I am trying to run a linq query but I need the result as a datatable as I am using that to store records from different queries in the same viewstate object.The 2 versions below compile, but return an empty set. The exact error is "Value cannot be null.Parameter name: source". (and yes I have checked there is data):
MyDatabaseDataContext db = new MyDatabaseDataContext(conn);
IEnumerable<DataRow> queryProjects =
(from DataRow p in db.STREAM_PROJECTs.AsEnumerable()
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I have to filter the records from the data table based on the date.
I am having a column in data table called "cStartDate".
I will enter the begin and end date. I have to find out whethere the "cStartDate" is within the begin and end date i entered.
I am going to implement the filter logic in data table with out affecting the data base.
I need a Filter string for this.
I would like to send json data from a HTML table to the ASP.NET code-behind and update the data in and SQL Server database. The code and JSON for the TableProductToUpdate() is below.
function UpdateProductTable() {
$.ajax({
type: "POST",
url: "Default.aspx/UpdateProductTable",
data: "{'products':" + JSON.stringify(TableProductToUpdate()) + "}",
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'DataTable' is an ambiguous reference between 'System.Data.DataTable' and 'Microsoft.Office.Interop.Word.DataTable'
View 3 RepliesI'm writing a web service that needs to query an Access 2003 database (.mdb). I've found the following code in doing some research on OLEDB connections and queries:
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Errors are as follows:
Error 3 A field initializer cannot reference the non-static field, method, or property 'CompleteRentalls.completedb.sqlString'
Error 5 'CompleteRentalls.completedb.da' is a 'field' but is used like a 'type'
Can anyone help me rectify the above code such that the query results are returned to my datatable?
I was reading: [URL]
But I have give a compilation error:
CS0246: The type or namespace name 'DataTable' could not be found (are you missing a using directive or an assembly reference?
i have the dataset with one table.Table contains three column like 'Name','Location','Pin'.I would like to move the data from another table based on schema.
View 2 RepliesIf 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 Repliesim trying to copying specific record from one datatable to another datatable i used below code
public System.Data.DataTable selectspecificdatarow(System.Data.DataTable dtg, int count, int startindex)
{
System.Data.DataTable dtn = dtg.Clone();
for (int i =startindex; i < count; i++)
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its taking too long time in cloneing is there any better way to do this task which is Time effecent
how to join two datatable datas into one datatable to show in one gridview
i.e in 1 datatable i have username and pwd and in another datatable i have that user details. how to show all these in one datatable to get those values display in gridview(asp.net)
Dim dt As New DataTable Dim da As New SqlDataAdapter(s, c)
c.Open()
if Not IsNothing(da) Then
da.Fill(dt)
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When I call da.fill I am inserting all records from my query. I was then hoping to filter them to display only those where the GroupingID is equal to 0. When I run the above code. I am presented with all the data, the filter did not work. Please can you tell me how to get this working correctly.
how to copy data from datatable to table in dataset i ry this but its readonly property
ds.datatable1=newdt.copy
I have a DataTable of available time slots. I have another DataTable of reserved time slots. I need to remove from the list of available slots the ones that have been reserved. The blocks are in 15 minute increments, but one of my problems is that the reservation can be longer than 15 minutes. I've had some luck removing one or two, but not all of the required columns.
Here's my code (it doesn't work right now).
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