How to insert dropdownlist value, text box value and gridviews selected row together? - asp.net

Question

How to insert dropdownlist value, text box value and gridviews selected row together?
Also attached the screenshot of the data insert:
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Answer 1

I tend to prefer a add button that adds a row to the grid, and THEN you let the user edit the one row.
However, assuming you have those text boxes at the top of the screen, enter data, and then click a button to add to the database, and then re-fresh the GV?
I also don't see some button in the top area to add the data?
so, say a button added to the top area?
then this would add the row to the database:
protected void Button3_Click(object sender, EventArgs e)
{
string strSQL =
"INSERT INTO MyTable (Session, Class, Section, Term, Subject, HighestMark) " +
"VALUES (#Session, #Class, #Seciton, #Term, #Subject, #HighestMark)";
using (SqlConnection conn = new SqlConnection(Properties.Settings.Default.TEST4))
{
using (SqlCommand cmdSQL = new SqlCommand(strSQL,conn))
{
conn.Open();
cmdSQL.Parameters.Add("#Session", SqlDbType.Int).Value = DropSession.selecteditem.value;
cmdSQL.Parameters.Add("#Class", SqlDbType.Int).Value = DropClass.selecteditem.value;
cmdSQL.Parameters.Add("#Section", SqlDbType.Int).Value = DropSection.selecteditem.value;
cmdSQL.Parameters.Add("#Term", SqlDbType.Int).Value = DropTerm.selecteditem.value;
cmdSQL.Parameters.Add("#Subject", SqlDbType.Int).Value = DropSubject.selecteditem.value;
cmdSQL.Parameters.Add("#HighestMark", SqlDbType.Int).Value = HighestMark.Text;
cmdSQL.ExecuteNonQuery();
}
}
ReloadGrid(); // call routine to refresh the grid.
}
Edit: Adding the rows to a new table
Ok, so we are to take the top values, and then process each row of the grid, and take the ones with a check box and "insert" this data into a new table.
Ok, so the code will look like this:
protected void Button1_Click(object sender, EventArgs e)
{
string strSQL = "SELECT * FROM tblHotelsA WHERE ID = 0";
DataTable rstData = MyRst(strSQL);
foreach (GridViewRow gRow in GHotels.Rows)
{
CheckBox ckChecked = gRow.FindControl("ckSelected") as CheckBox;
if (ckChecked.Checked)
{
// this row was checked - add a new row
DataRow MyNewRow = rstData.NewRow();
MyNewRow["HotelName"] = txtHOtelName.Text; // exmaple control
MyNewRow["City"] = txtCity.Text; // example control above grid
// values from grid row
// tempalted columns, we use find control
MyNewRow["FirstName"] = (gRow.FindControl("txtFirstName") as TextBox).Text;
MyNewRow["LastName"] = (gRow.FindControl("txtLastName") as TextBox).Text;
// if data bound column, then we use cells collection
MyNewRow["FavorateFood"] = gRow.Cells[5];
// etc. etc.
rstData.Rows.Add(MyNewRow);
}
}
// done adding to table, write/save back to database.
using (SqlConnection conn = new SqlConnection(Properties.Settings.Default.TEST4))
{
using (SqlCommand cmdSQL = new SqlCommand(strSQL, conn))
{
SqlDataAdapter da = new SqlDataAdapter(cmdSQL);
SqlCommandBuilder daU = new SqlCommandBuilder(da);
cmdSQL.Connection.Open();
da.Update(rstData);
}
}
}
I also had this helper routine - I often use it all over the palce:
public DataTable MyRst(string strSQL)
{
DataTable rstData = new DataTable();
using (SqlConnection conn = new SqlConnection(Properties.Settings.Default.TEST4))
{
using (SqlCommand cmdSQL = new SqlCommand(strSQL, conn))
{
cmdSQL.Connection.Open();
rstData.Load(cmdSQL.ExecuteReader());
}
}
return rstData;
}
So, the concept here?
I pulled a blank row (SELECT * from table where ID = 0).
This gets me the database structure - and thus avoids a BOATLOAD of parameters in the sql.
this approach ALSO allows me to add a row to the table, and add "many" rows. And then execute ONE update to the database to write out (save) all the rows in one shot. So, this again reduced quite a bit of messy code.