I'm very new to ASP.NET (have a decent VB6/ADO background though) and have a question. I have a web app that is built in ASP.NET and VB.NET. I have defined a SqlDataSource and was wondering how to (using VB) find a value within a recordset. Back in the VB6/ADO days I would do something like "ADODC1.Find ("Field = value")
View 1 Replieshow to Search a record from SqlDataSource
[code]....
I have a gridview and a SQLDataSource control. In my gridview I have 2 commandfields "Edit" and "Delete"
The "Edit" command field works as expected. Using the "Delete" command field I get the error below.
Server Error in '/DataControls' Application.
The DELETE statement conflicted with the REFERENCE constraint "FK__titleauth__au_id__0CBAE877". The conflict occurred in database "pubs", table "dbo.titleauthor", column 'au_id'. The statement has been terminated.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.Data.SqlClient.SqlException: The DELETE statement conflicted with the REFERENCE constraint "FK__titleauth__au_id__0CBAE877". The conflict occurred in database "pubs", table "dbo.titleauthor", column 'au_id'. The statement has been terminated.
Source Error:
[Code]....
Stack Trace:
[Code]....
i open a sqldatasource for binding on listview.
I would like also to read a field on first record for print it.
How can i access to my sqldatasource from code behind ?
I need to get one record from rows. For example:
DB:
id, name, age, nick, gender , etc...
1, John, 18, gobb, M, ....
2, Andrew, 22 , AND, M, .....
3, Simon, 35, Lucky, M, ......
How to Get name (For example Simon) from DB and enter it into label? Or perhaps this is impossible?
I have a sqlDatasource with a SelectParameter ControlParameter linked to a dropdownlistIs there an a way to select all records like *
[Code]....
So I can select records by year, but is there a value that will select all records for the @Year Parameter so I can display all records?
I have one SqlDataSource control as DataSet with enable caching in one page aspx. Filtering is applied to this SqlDataSource control, so that the page always returns one record data.
My question: How to get the record data value from SqlDataSource control (one record data value) and store it as String variable?
I have data grid with page size 15. I need to find total number of record(s) in a grid. How to do it?There is two ways to do:
1) Here I have used LINQ. So calling stored procedure again and we can done using .Count () property. But here I don't want make call to data base again.2) Creating our own logic like here I have done like:
(dtgCustomerSearch.PageCount - 1) * (dtgCustomerSearch.PageSize) + dtgCustomerSearch.Items.Count
The above result gives me correct result only when I am on last page.
I m using ASP.NET and access as back end. I want to fatch a record between two specific date for that i
private void btnsearch_Click(object sender, EventArgs e)
{
cn.Open();
string str = "select Date1,Item,Rs,Payment from Books where Date1 BETWEEN '" + dateTimePicker1.Text + "' AND '" + dateTimePicker2.Text + "'";
cm = new System.Data.OleDb.OleDbCommand(str, cn);
System.Data.OleDb.OleDbDataReader r1;
r1 = cm.ExecuteReader();
while (r1.Read())
{
dataGridView1.Rows.Add();
dataGridView1.Rows[i].Cells[0].Value = r1[0].ToString();
dataGridView1.Rows[i].Cells[1].Value = r1[1].ToString();
dataGridView1.Rows[i].Cells[2].Value = r1[2].ToString();
dataGridView1.Rows[i].Cells[3].Value = r1[3].ToString();
i++;
}
cn.Close();
}
but it gives error Data type mismatch in criteria expression. table name is "book" fields are date1,item,rs,payment
best Way to find out if record exists?
[Code]....
Here is the sqldatasource config code: <asp:SqlDataSource ID="SqlDataSource1" runat="server"
View 1 RepliesI want to do is to get the record number in my database of the first record that matches my search. Its to skip to a random point in the database based on user input.
[Code]....
It returns the number of records that preceed the first one to match the string. I have tried to call this procedure from MVC and it always returns -1, so I have a fundamental problem there. I have also tried ot figure out how to just duplicate the code in MVC and I also cannot seem to get anywhere on that front.
Does anyone know a simple elegant solution to either embed this code diretly into MVC or to call my stored procedure from MVC and get the correct integer response back, instead of -1? I am engaged in relearning development after many years, so I am getting stuck on the basics.
I am trying to tie a sqlDatasource to a Stored Procedure. The stored procedure looks like...
[Code]........
I am using paging to my gridview (pagesize=4) . now i am in (X) page and i want to get (X+1) page top record or (X-1)page bottom record , how i can get .
View 2 RepliesI have a delete button bellow my gridview and I want a pop up to show when no record is selected and tell the user to first select a record. The button click event would show the pop up, but my gridview data blanks out.
Here is my code:
[Code]....
I'm very new on VWD, but I got the hang of it for the past 2 weeks(thank you for all the videos posted here in ASP.NET),but I'm really weak on the coding part(vb & c#),except for all the sample shown on the tutorials. Anyways, I have a simple project that
does insert, update & delete to SQL express using the details view. But to complete my project, I need to add a button that will create an event to restore the very last record inserted in SQL and display it back into the details view for minor modification
and nserted again as the newest record with the mod. I'm doing this so user, doesn't need to re-key-in redundant information, like names, original date & time etc, and just make modification on the description of the last record.....
I want users to select a record in the GridView and then have that record open up in the Detailsview. How would I go about getting these two tools to communicate?
View 4 Repliesi have design a web application having suppliers table using SqlDatasource..
i have a master page in my design and other form are bound to a context menu..
Now i have displayed the records in the gridview..all i wanted is after i select a record in the gridview it will display the selected record in detailview from another aspx form..
i was able to create the link to another aspx form but the data that it display is the first data from the gridview not the data that i select.
i have one parent grid on which if user clicks a record ,the child details should get displayed on same page.
for example :
There is one department details table and employees table:
if user selects a record in department details grid,then employees in the selected department should get displayed in the next grid in the same page
I was Make code to select top 3 record from db and I wont to enter every record in label or textbox
[Code]....
I want to change the text of the user name text box which is inside a log in view on selected index chaged event of a drop down list.
this is my code:
[Code]....
but both ddl and tb are null
Anyone knows how can I find the controls in code behind?
What I am trying is, whenever user enters his Name and Address into the textbox on the webpage, I am going to displaying it in a Gridview. Now if second member will do the same thing thing the GridView will be updated and his Name and Address will display in second row and likewise for other users. But what happened in my code is when second user will try to add his record, it remove the record of first user and add the record of second at row1. I want the record should be added one after another. below is my code
[code]...
I am counting from a table for that i have written code as below
protected void get_Id_Afterpoint()
{
int counter = 0;
string strSql = "select count(*) as ID from tblEnergy where ID=?";
OdbcCommand com = new OdbcCommand(strSql, con);
com.Parameters.AddWithValue("ID", DropDownList1.SelectedValue);
OdbcDataAdapter oda = new OdbcDataAdapter(com);
DataTable dt = new DataTable();
oda.Fill(dt);
if (dt.Rows.Count == 0)
{
lblID2.Text = "1";
}
else
{
counter = dt.Rows.Count;
counter = counter + 1;
lblID2.Text = Convert.ToString(counter);
}
}
there is no record related to DropDownList1.SelectedValue. but as i am counting if(dt.rows.count) and i put break point on the bolded part it shows 1 record. how it can be possible?
How to Call a record on datalist by button click and display record on formview in model using Username
Here is what i tried
<asp:DataList ID="GetMergedAll." runat="server">
<asp:Label ID="Name" runat="server" Text="Label"></asp:Label>
<asp:Label ID="Post" runat="server" Text="Label"></asp:Label>
<asp:LinkButton ID="LinkButton6" runat="server">LinkButton</asp:LinkButton>
</asp:DataList>
protected void Page_Load(object sender, EventArgs e)
[Code] ....
HTML
model here
<asp:FormView ID="Post" runat="server">
<asp:Label ID="Name" runat="server" Text="Label"></asp:Label>
<asp:Label ID="Post" runat="server" Text="Label"></asp:Label>
</asp:FormView>
I am creating an album using the following stored procedure, which returns the primary key for the newly created record:
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
CREATE PROCEDURE [dbo].[fpa_sp_albums_update_insert]
@album_id int,
@album_name nvarchar (50),
@album_descr nvarchar(250),
@album_img_cover_id_FK int,
@album_creation_date date
AS
If @album_id > 0
UPDATE [fpa_albums]
SET
album_name=@album_name,
album_descr= @album_descr,
album_img_cover_id_FK = @album_img_cover_id_FK,
album_creation_date = @album_creation_date
Where ((album_id = @album_id))
Else
INSERT INTO [fpa_albums] (
album_name,
album_descr,
album_img_cover_id_FK,
album_creation_date)
VALUES (
@album_name,
@album_descr,
@album_img_cover_id_FK,
@album_creation_date)
Return SCOPE_IDENTITY();
I execute the above stored procedure using the SQLHELPER. The VB.NET code for the page is as follows:
[Code]....
However, the createdAlbumID always shows -1 instead of the id for the newly created album.