Delete Command Usage From Aspx Page To Mysql Database
Feb 1, 2010
I have mysql database which has been connected to web page in grid view (using add object), i would like to make delete option enabled in my web page to erase the records using check boxes may be multiple checks in single time, but i have finished the code for enabling single check and multiple checks of check boxes, my query is how to connect my mysql database to the web page using code so i can easily connect the database for using the delete command.
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[Code]....
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i have populated the gridview dynamically and set the ShowDeleteButton = true.. i have the delete command but i cant delete the specific row i wanted to delete..
here is my gridview code:
<asp:GridView ID="GridView1" runat="server" ShowDeleteButton="true" Width="540px"
AutoGenerateDeleteButton="True" GridLines="None">
and here is the code behind:
protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e)
{
string ann = (GridView1.DataKeys[e.RowIndex].Values[3].ToString());
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[Code]....
how to get the values of the row that i want to delete.
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Dec 21, 2010
My code is to update a record if it already exists in database else insert as a new record. My code is as follows:
protected void Button3_Click(object sender, EventArgs e)
{
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MyCmd.Parameters.AddWithValue("", TextBox3.Text);
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{
//**
if (MyReader4.Read())
{
String MyString1 = "UPDATE temp_save SET order=? where fil_no=? AND orderdate=?";
OdbcCommand MyCmd1 = new OdbcCommand(MyString1, MyConnection);
MyCmd1.Parameters.AddWithValue("", Editor1.Content.ToString());
MyCmd1.Parameters.AddWithValue("", HiddenField1.Value);
MyCmd1.Parameters.AddWithValue("", TextBox3.Text);
MyCmd1.ExecuteNonQuery();
}
else
{
// set the SQL string
String strSQL = "INSERT INTO temp_save (fil_no,order,orderdate) " +
"VALUES (?,?,?)";
// Create the Command and set its properties
OdbcCommand objCmd = new OdbcCommand(strSQL, MyConnection);
objCmd.Parameters.AddWithValue("", HiddenField4.Value);
objCmd.Parameters.AddWithValue("", Editor1.Content.ToString());
objCmd.Parameters.AddWithValue("", TextBox3.Text);
// execute the command
objCmd.ExecuteNonQuery();
}
}
}
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fil_no-->INT(15)( to store a 15 digit number)
order-->LONGTEXT(to store contents from HTMLEditor(ajax control))
orderdate-->DATE(to store date)
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Query in my Grid view
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On select check box in grid view, filed values will be loaded with data.
field value
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I have this gridview, that works perfectly when running in local computer. Platform is VWD 2010 - Sql Server
[code]....
Browser fire the confirmation question, but after hittting YES, nothing happens.
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[Code]....
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Sep 30, 2010
I'm trying to delete a bunch of records in mysql. The record info to delete (userid, name) is stored in an arraylist. It seems to only delete the first record and gives an error ("Transaction has already been rolled back or is not pending.") afterwards. I have the transaction commit inside the loop which I think is the issue but not sure how to go further if I bring it outside of the loop. Here's the relevant bits of the code.
try
{
ArrayList alist = new ArrayList();
//alist gets populated with data like (12345,robot)(23456,car) here.
MySqlConnection conn2 = new MySqlConnection(query_connection);
conn2.Open();
MySqlCommand command2 = conn2.CreateCommand();
MySqlTransaction mytransaction;
mytransaction = conn2.BeginTransaction();
command2.Transaction = mytransaction;
for (int i = 0; i < alist.Count; i++)
{
string[] s = alist[i].ToString().Split(',');
try
{
command2.CommandText = "DELETE from users_settings WHERE UserID=" + s[0].ToString();
command2.ExecuteNonQuery();
command2.CommandText = "DELETE from users WHERE ID=" + s[0].ToString();
command2.ExecuteNonQuery();
mytransaction.Commit();
}
catch (Exception e){
mytransaction.Rollback();
}
}
}
catch(Exception e){
}
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May 11, 2010
Before I get too far down the road I just want some advice. I'm building a web app using VWD2008 and MySQL 5. I've got the membership provider stuff working fine and have an odbc connection setup which works "fine". what I've noticed is that when I configure a new sqldatasource (that will be used to provide data to a listview or something) the Advanced -> generate Insert,Update..... option is disabled. I'm assuming its because of the sql syntax difference of the square brackets issue between MS SQL Server and MySQL.
Before I start writing all my own insert and update statements does anyone know if there is a way to get MySQL and VWD to talk the same language, maybe a different connector or something. I'm using mysql-connector-odbc-3.51.15
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Nov 9, 2010
I have a GridView and a SqlDataSource, which I have set to automatically generate Delete/Insert/Update statements. I then just enabled Deleting on the GridView, and usually away I'd go. For some reason though, the row is not being deleted - the page is posting back but the row is still there. When Delete is clicked, RowDeleting does fire though. What possible causes could this be?
Edit: SELECT command:
SELECT id, templatename, CASE WHEN type = 'W' THEN 'Weekly' WHEN type = 'M' THEN 'Monthly' WHEN type = 'Q' THEN 'Quarterly' WHEN type = 'S' THEN 'Six-monthly' WHEN type = 'A' THEN 'Anually' END AS TypeText, CASE WHEN invorcred = 'I' THEN 'Invoice' WHEN invorcred = 'C' THEN 'Credit' END AS 'InvOrCredText', nextinvdate, lastinvdate FROM InvoiceTemplates WHERE (sageaccount = @sageaccount)
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Feb 16, 2010
see this code.
[Code]....
"Tbl_Name" is a varaible contain tables name for delete records on an table(at a time Tbl_Name change table name by drop down list)
problem: in SCommand.ExecuteNonQuery() error appear:incorrect syntax near Tbl_Name (i use ado.net connection)
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Jan 10, 2010
I have some simple shopping cart using DataTable and Session, all data are in datalist after user click "Add" the record go to gridview. how can i add delete button to delete row from the gridview?
aspx.cs:
[Code]....
aspx (gridview):
[Code]....
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