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 built a web app and want the user to be able to select, update, delete, add data as well as execute stored procedures, I thought that I would get this from the db_datareader and db_datawriter roles but I get an error when trying to select data etcFor instance I get an error when trying to run the stored procedure ups_AddCustomer when the user has the assigned roles db_datareader & db_datawriter but it works fine when the db_dbowner but i would rather not have the page user having full access to the database.
I have a gridview with edit,update and delete options..Using a radiobutton,how it is possible to select a particular row of gridview and update or delete that particular row?
I have made a DetailsView which in DetailsView there is action to add the data, change data and delete the data ..how to save, change, delete data, which is in the DetailsView without saving it in the database?so far I use viewstate, but I do not know how to apply it in DetailsView ..
how to create insert , update , delete . in detailsview without saving in database ..
private void Bindemptydt() { //Declare a datatable for the gridview DataTable dt = new DataTable(); //Add Columns to the datatable dt.Columns.Add("report_id"); dt.Columns.Add("param_field"); dt.Columns.Add("param_label");
Dim dt As New DataTable Dim da As New SqlDataAdapter(s, c)
c.Open() if Not IsNothing(da) Then da.Fill(dt)
[code]...
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.
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:
[URL]
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?
iam insert data through gridview using datable, and i have 2button , insert and delete button , i wants to delete a row from the gridview using delete button below the code i constructed for insert, how to delete the row.
I am trying to delete row(s) from the DataTable conditionally but I cant.
Actually I have DataList with CheckBox (default value checked=false). I am bindind DataList at run time using DataView (Dataview is created fromDataTable).
I also have <asp:Button ID="btnDelete" ....> which I am using to delete checked items in the DataList (But this functionality is not working).
The user first "checked" items in the DataList and click the the button "btnDelete". Here nothing is being deleted (?) and the DataList appears with all the items"unchecked" (even those which the the "checked" by the user). protected void btnDelete_Click(object sender, EventArgs e) . In this function I am checking state of the checkbox before deleting the row in the DataTable.
On PostBack generated by the "btnDelete", DataList appears with checkboxes unchecked therefore nothing is being deleted
I have records in the datatable which I have retreived from xml file.
Dim docDataSet As New DataSet Dim docReader As New XmlDocument Dim xnl As XmlNodeList docReader.Load("UserProfile.xml") xnl = docReader.SelectNodes("/Users/user") For Each xn As XmlNode In xnl Dim xr As New XmlNodeReader(xn) docDataSet.ReadXml(xr) Next xn Dim Dm_table As DataTable = ds.tables(0)
Now what I want to do is execute a select query like below:
Select * from user where userid in (select ID from Dm_table)
Retreive the records from the User table based on the ID's in the datatable.
I have a dataset generated from xml from a web service.Data needs to be sorted by date order descending, I cannot get the web service changed so thought I'd try:
Code: repeater1.DataSource = dsCombinedBlock.Tables(2).Select("Status < 3 and status <> 99", "DateReceived desc") However the dates are treated as a string so the results look like
I want to delete the rows present in the DataTable by using LINQ (with out looping)
The deleted rows will be come from a LINQ as below
IEnumerable<DataRow> MobileQuery = (from d in dtBillDetail.AsEnumerable() where (String.Compare(d.Field<string>("Destination"), "MOBILE", StringComparison.InvariantCultureIgnoreCase) == 0) select d );
The DataRows present in the "MobileQuery" should be deleted in the DataTable "dtBillDetail"
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; }
