following is my code to update my database from a datatable. My rows are manipulated by my code perfectly. that i can see in my gridview but my database is not getting updated according to the manipulation
Code:
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DataTable to update database? tbl.Columns.Add("COL1");
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How can I Edit/Update, Delete and save record to database
i want to build a datagrid bound to a datatable with several columns. One column has only a dropdownlist with the number of the rows in the datatable.
Here a samplescreenshot:
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I know how to bind the columns to a grid and its no problem to create such a dropdown list with the content for me, too. But i dont know how to sort the complete datatabl after changing one value of one dropdown listbox.
So, how can i resort the values of a datatable column based on a given value and the datarow id?
Sql Table has 2 fields "id" and "name". Also "id" is the primary key with identity. I am using data adapter to fill data table "myTable". This brings id/name pairs form the database and fill "myTable".
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Later I add new rows to "myTable".
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and call dataadapter.Update(myTable). Dataadapter will add new rows to the database and the database will assign new id to each new ecord. StoredProcedure which actually insert new record, returns @@identity. How can I add this @@identity to myTable
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Data Adapter insert new records reursively and each insert in the database causes @@identity to be returned. I want dataadapter to add @@identity to myTable.
I am trying to search how to select rows from a datatable. When selecting these rows I should be able to delete the row or edit (update) the row.
I am using the following code to load the data from MsSql 2008 to a dataGridView;
DataTable dtTypes = new DataTable();
SqlConnection con = new SqlConnection(Settings.Default.JLTrackConnectionString);
SqlCommand cmd = new SqlCommand("SelectJobTrackForDate", con); [code]....
Is there any good article which tackles this because I am searching for the bad keywords I think.
I have a Datatable store in the Session. This Datatable has a column call Qty. I have one button on the page that will update the Qty. How can I update my DataTable Qty column?
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I need to perform update operation in a datatable without using loops. Is there any way to perform update in a datatabel...
View 3 RepliesI am using untyped database bind to gridview in an edit form. Now user makes some changes to that datatable (update, delete, insert). How do I detect which rows he changes and which rows he deleted (so I drop them from DB). I know it can be done easily via table adapters but I am supporting a previously built app using untyped datatables/datasets.
View 9 RepliesI'm trying to add new rows to a data table and then use the sqldataadapter update method bu fund some problems. First, I written this code:
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Excuse me but the most part of variable are in italian, however I think it is possible to understand how does it work. If I execute this code I obtain this error:
System.InvalidOperationException: Update requires a valid InsertCommand when passed DataRow collection with new rows.
After this I added these lines of code just above the last line:
SqlCommandBuilder cb = new SqlCommandBuilder(adapter);
adapter.InsertCommand = cb.GetInsertCommand;
and I obtained this error:
Cannot convert method group 'GetInsertCommand' to non-delegate type 'System.Data.SqlClient.SqlCommand'. Did you intend to invoke the method?
my requirement is to update a duplicate record in datatable.in my website if anyone select a product more than one time then i have to check and update the quantity of that record.i use for loop for this but it is not working properly, it is running perfectly for one product but when i add another product it won't work.how can i do this?Here is my code part which is run on add button click
if (sc.dtcart.Rows.Count > 0)
{
for(int i=0;i<sc.dtcart.Rows.Count;i++)
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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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Existing records can be updatedNew records can be insertedAll existing records can be deleted & new ones can be insertedExisting records have a primary key field
New ones are just blank inserts
All this detail is stored in a data table. On form update I only want to update existing (only modified rows) & insert new rows. I have gone about loading the changed records in a new data table
DataTable changedRecordsTable = dataTable_old.GetChanges();
How do I compare it with all the records in the old datatable and pass them to the save query ?
'DataTable' is an ambiguous reference between 'System.Data.DataTable' and 'Microsoft.Office.Interop.Word.DataTable'
View 3 RepliesI have gridview wich bind with dynamic datatable.
<asp:GridView ID="grdCountries" runat="server" AutoGenerateColumns="False" ShowHeader="False" OnRowDeleting="grdCountries_RowDeleting" DataKeyNames="country_id" BorderStyle="None" GridLines="None">
i want to update the data of a database through a gridview update button
how can i attach a dataconvertion like this
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i got a problem to update my database which i bounded to datagrid. The problem is, i want to update my database only by clicking one update button at the bottom.. when the user click it, all the fields will be updated to database.
View 3 Repliesi don't have table in database. i need to create table and insert my data table values to database at a single hit.i am creating data table at front end and i want to insert into database at single hit to the database. is it possible to do?
View 5 RepliesI am going to outline my setup then where i am failing
UpdatePanel1 - Contents : 3 textboxes and AddButton
UpdatePanel2 - Contents : 1 GridView and SubmitButton
AddButton adds new row to DataTable with data from textboxes, binds DataTable to GridView SubmitButton sends data to database. The Adding of a row works to add the row to the gridview, but it won't add a second or third and so on, only adds the 1. SubmitButton belives the DataTable that GridView is databound to is null and won't send anything to the database. How can i get the datatable to persist between the two update panels? Do i use Sessions as my storage location? Page
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Im trying to update my DB(DataBase) by using SQL UPDATE query ,but its not updating in the dataBase i receive confirmation(in testLabel) that one row is affected(dataReader = query.ExecuteReader(); return numbers of rows affected)...
I have given a HTML editortext control on a page,which generates HTML (i have to store it in my DB,that page is only for Admin) ,on pressing Update button , im receving in my testLabel that one row is affected(which shows DB is updated succesfully) but when i check my DB its in old state,it is not updating...
Here is my Event handler of Update Button which have to make updates in DB:
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I am trying to update a coulmn in datatable but keep getting error:
Input string was not in a correct format.Couldn't store < > in SortOrder Column. Expected type is Int32.
SortOrder is column of Type Integer that either contain Null or number.
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This is my GET Method to get my data from my DataTable
Private Function GetData() As PagedDataSource
' Declarations
Dim dt As New DataTable
Dim dr As DataRow
Dim pg As New PagedDataSource
' Add some columns
dt.Columns.Add("Column1")
dt.Columns.Add("Column2")
' Add some test data
For i As Integer = 0 To 10
dr = dt.NewRow
dr("Column1") = i
dr("Column2") = "Some Text " & (i * 5)
dt.Rows.Add(dr)
Next
' Add a DataView from the DataTable to the PagedDataSource
pg.DataSource = dt.DefaultView
' Return the DataTable
Return pg
End Function
It returns the DataTable as "pg"
What changes must I make to this GET method to get the records from a table in my database?
C# examples will also do but would be great to see a reply with my code and then the changes....
I have a textbox and a search button i trying to search file names in a database table and display them in a datatable...
private void GetSearchResults(string machineID, string searchFileName)
{
DataTable dt = new DataTable();
SqlConnection connection = new SqlConnection();
connection.ConnectionString = ConfigurationManager.ConnectionStrings["SumooHAgentDBConnectionString"].ConnectionString;
connection.Open();
SqlCommand sqlCmd = new SqlCommand("SELECT FileID, BuFileName FROM BackedUpFiles WHERE BuFileName Like '%@searchFileName%' AND MachineID=@machineID", connection);
SqlDataAdapter sqlDa = new SqlDataAdapter(sqlCmd);
sqlCmd.Parameters.AddWithValue("@machineID", machineID);
sqlCmd.Parameters.AddWithValue("@searchFileName", searchFileName);
sqlDa.Fill(dt);
}
everything is working fine except that the searchFileName is not working in the query...
I tried putting just a value to check like
SELECT FileID, BuFileName FROM BackedUpFiles WHERE BuFileName Like '%b%' AND MachineID=@machineID
I have a form where users upload a file (csv), then the server does some processing, and generates a datatable. the table will be shown in grid. however, the table's column is unknown, and sometimes, the table is huge. I need show this table in another form.
It seems session variable is not good for this since the table maybe huge. is there a way to write this table to sql, then load it again in the other form?
I have a table say, Student.
I have a class 'Student'.
I want to populate IList<Student> with objects of Student class from Student table in database.
Is it possible to implement this?
If yes then how to implement this.