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How to get all data in gridcontrol by one click

How to use loop to read all records by one click on the button. I have to print many reports.For each row in the table I need to create a report. And read until the last row of the table . My idea is using loop or index table but i don't know how to do it. This is my code:
private void btnin_Click(object sender, RoutedEventArgs e)
{
try
{
cnn.Open();
SqlCommand cmd = new SqlCommand(" SELECT * FROM viewdata1 WHERE Customers = '" + cbbcustomer.Text + "'", cnn);
SqlDataAdapter da = new SqlDataAdapter(cmd);
DataTable dt = new DataTable();
da.Fill(dt);
cnn.Close();
XtraReport1 report = new XtraReport1();
report.DataSource = dt;
report.ShowPreviewDialog();
}
catch ( Exception ex )
{
MessageBox.Show(ex.Message);
}
}

You could iterate through the Datatable
foreach(DataRow row in dt.Rows)
{
DataTable dtrow = new DataTable();
dtrow = dt.Clone();
dtrow.ImportRow(row);
XtraReport1 report = new XtraReport1();
report.DataSource = dtrow;
//report.ShowPreviewDialog(); Not sure what happens here but maybe a print method is better suited?
}
Basically for each row you create a datatable with the same structure and import one row. Then its assigned as your datasource. This will iterate through all rows.

For some reasons, I had to change something in my code. I used Mark Vance's code but it didn't work:
DataTable a = new DataTable();
a = ((DataView)ctrlgridviewdulieu0.ItemsSource).ToTable();
foreach (DataRow row in a.Rows)
{
DataTable dtrow = new DataTable();
dtrow = a.Clone();
dtrow.ImportRow(row);
try
{
cnn.Open();
SqlCommand cmd = new SqlCommand(" SELECT * FROM viewdulieu2 WHERE Khachdat = N'" + dtrow.ToString() + "'", cnn);
SqlDataAdapter da = new SqlDataAdapter(cmd);
DataTable dt1 = new DataTable();
da.Fill(dt1);
XtraReport1 report = new XtraReport1();
report.DataSource = dt1;
// report.Print();
cnn.Close();
report.ShowPreviewDialog();
}
catch (Exception ex)
{
cnn.Close();
MessageBox.Show(ex.Message);
}
}

How do you get the Id of the item in CheckListBox

I have a checkListBox in my windows form application and binded with my database data with SQL. I populate a list of item according to what I select from my comboBox. If I select item 1 from my comboBox, it will display customers' name who is using this item. I want get customers' id according to what I check in my checkListBox.
Here is how I fill my comboBox
private void fill_comboBox()
{
myConn = new SqlConnection("Server = localhost; Initial Catalog= dbName; Trusted_Connection = True");
try
{
string query = "select itemId, itemName from item_detail";
SqlDataAdapter da = new SqlDataAdapter();
myConn.Open();
DataTable dt = new DataTable();
SqlCommand command = new SqlCommand(query, myConn);
SqlDataReader reader = command.ExecuteReader();
dt.Load(reader);
DataRow dr;
dr= dt.NewRow();
dr.ItemArray = new object[] { 0, "<----------Select an item-------> " };
dt.Rows.InsertAt(dr, 0);
itemComboBox.DataSource = dr;
itemComboBox.ValueMember = "itemId";
itemComboBox.DisplayMember = "itemName";
fill_customerCheckListBox();
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
Here is how I fill my checkListBox
private void fill_customerCheckListBox()
{
myConn = new SqlConnection("Server = localhost; Initial Catalog= dbName; Trusted_Connection = True");
try
{
myConn.Open();
DataSet myDataSet = new DataSet();
myDataSet.CaseSensitive = true;
string commandString = "select fullName from[customer_detail] as cd LEFT JOIN[item_customer] as ic ON ic.customerId= cd.customerI WHERE ic.itemId= '" + itemCombBox.SelectedValue + "' ";
myCommand = new SqlCommand();
myCommand.Connection = myConn;
myCommand.CommandText = commandString;
SqlDataAdapter myDataAdapter = new SqlDataAdapter();
myDataAdapter.SelectCommand = myCommand;
myDataAdapter.TableMappings.Add("Table", "customer_detail");
myDataAdapter.Fill(myDataSet);
DataTable myDataTable = myDataSet.Tables[0];
customerCB.Items.Clear();
string s = "Select All Customer";
customer.Items.Add(s);
foreach (DataRow dataRow in myDataTable.Rows)
{
customerCB.Items.Add(dataRow["fullName"]);
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
I have a praremter for loop that trying to loop through every checked item from my customerCB, but this isn't working. When I am in my debug mode, the code DataRow row = (itemChecked as DataRowView).Row; is causing an exception
Object reference is not set to an instance of an object.
I have no idea how to fix this. Help will be appreciated, thanks
string parameterList = "";
foreach (object itemChecked in customerCB.CheckedItems)
{
DataRow row = (itemChecked as DataRowView).Row;
parameterList += (parameterList.Length == 0) ? row[0].ToString() : ", " + row[0].ToString();
}

Try the Following way !!
foreach(object itemChecked in checkedListBox1.CheckedItems)
{
DataRowView castedItem = itemChecked as DataRowView;
string fullName= castedItem["fullName"];
}
(OR) You would need to cast or parse the items to their strongly typed equivalents, or use the System.Data.DataSetExtensions namespace to use the DataRowExtensions.Field method demonstrated below:
foreach (var item in checkedListBox1.CheckedItems)
{
var row = (itemChecked as DataRowView).Row;
int id = row.Field<int>("ID");
string name = row.Field<string>("fullName");
}

it seems than when you are populating your combobox your are entering dataRow["fullName"] therefore this cast DataRow row = (itemChecked as DataRowView).Row won't work as itemChecked only contains the value of fullName and not the row, try adding the dataRow instead.

Datagridview not updating/refreshing

I have a DataGridView made of a DataSet of a table from the DB. When I delete a row, it is updated in the database but it is not removed from the GridView. Only when I restart the application does it get removed from the GridView.
Please help

You need to reset the binding on your bindingsource.
bindingSource.ResetBindings(false);

This is a very simple process.
1.) Create a Binding Source
2.) Set the Datasource for this object to your Dataset Table.
3.) Set The datasource for your DatagridView as the Binding source Object.
Code Example:
Dataset ds = new Dataset();
BindingSource bs = new BindingSource()
bs.Datasource = ds.Table[0];
DatagridView.Datasource = bs;
Now, Any changes you make in the DataTable will ripple through to your GridView automatically.

Hope this helps you?
if you are showing your table in dgv and for deleting something from that table you have a button on your win form. you chose let's say ID and click "delete" button for delting an item from db table. Here is that code:
private void btn_Delete_Click(object sender, EventArgs e)
{
int selectedCellCount = dgv.GetCellCount(DataGridViewElementStates.Selected);
if (selectedCellCount > 0)
{
string selection;
for (int i = 0; i < selectedCellCount; i++)
{
selection = dgv.SelectedCells[i].Value.ToString();
string qs_delete = "DELETE FROM yor_table WHERE id = '" + selection + "';";
try
{
conn = new MySqlConnection(cs);
conn.Open();
cmd = new MySqlCommand();
cmd.Connection = conn;
cmd.CommandText = qs_delete;
cmd.ExecuteNonQuery();
conn.Close();
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
finally
{
if (conn != null) conn.Close();
}
}
}
//don't forget to load your table again in dgv
string qs_select = "SELECT * FROM your_table";
System.Data.DataTable dataTable = new System.Data.DataTable();
dataTable.Clear();
dgv.DataSource = dataTable;
try
{
conn = new MySqlConnection(cs);
cmd = new MySqlCommand(qs_select, conn);
conn.Open();
da = new MySqlDataAdapter(cmd);
da.Fill(dataTable);
cb = new MySqlCommandBuilder(da);
dgv.DataSource = dataTable;
dgv.DataMember = dataTable.TableName;
dgv.AutoResizeColumns();
conn.Close();
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
finally
{
if (conn != null) conn.Close();
}
}
You'll notice here that i have MySQL db but don't bother yourself with that.

If database is updated and you want to refresh DataGridView, call this:
this.<table name>TableAdapter.Fill(this.<DB name>DataSet.<table name>);
For example: Where is name of your table (for example Customers) and is name of your database (for example MyDB).
this.CustomersTableAdapter.Fill(this.MyDBDataSet.Customers);

You have to call this function after every deletion(Re-bind Grid).
void BindGrid()
{
YourDataGridView.DataSource = dataset;
YourDataGridView.DataBind();
}

Stored procedure in C# datagridview instead of listbox

I have a problem with stored procedures.
This code works (with a ListBox)
private void button4_Click(object sender, EventArgs e)
{
string connectionString = ConfigurationManager.ConnectionStrings["connString"].ConnectionString;
SqlConnection connection = new SqlConnection(connectionString);
string sqlCmd = "Drie duurste producten";
SqlCommand cmd = new SqlCommand(sqlCmd, connection);
cmd.CommandType = CommandType.StoredProcedure;
cmd.CommandText = sqlCmd;
connection.Open();
using (SqlDataReader reader = cmd.ExecuteReader())
{
while (reader.Read())
{
listBox1.Items.Add(reader.GetValue(0).ToString());
}
}
connection.Close();
}
But how can I add this data to a DataGridView instead of a ListBox?
Thank you!

Change to
......
using (SqlDataAdapter adapter = new SqlDataAdapter())
{
DataTable dt = new DataTable();
adapter.SelectCommand = cmd; {
adapter.Fill(dt);
dataGridView1.DataSource = dt;
}
......
usually a DataGridView is filled binding a complete datasource to its DataSource property and letting the control to figure out how to configure its columns and the formatting of the values displayed

SqlDataAdapter is the simplest way to do it.
But it is also possible to create DataTable and populate it manually and assign DataSource value of DataGridView to DataTable instance:
...
DataTable dt = new DataTable("test");
dt.Columns.Add("test");
using (SqlDataReader reader = cmd.ExecuteReader())
{
while (reader.Read())
{
DataRow dr = dt.NewRow();
dr[0] = reader.GetValue(0).ToString();
dt.Rows.Add(dr);
}
}
dataGridView1.DataSource = dt;
....

static public long Insert(BillAO ao)
{
try
{
SqlParameter[] Params =
{
new SqlParameter("#Status",ao.Status)
, new SqlParameter("#BAID",ao.BAID)
, new SqlParameter("#PhieuKhamID",ao.PhieuKhamID)
, new SqlParameter("#ThuNganID",ao.ThuNganID)
, new SqlParameter("#Ngay",ao.Ngay)
, new SqlParameter("#SoTien",ao.SoTien)
, new SqlParameter("#LyDo",ao.LyDo)
, new SqlParameter("#GhiChu",ao.GhiChu)
, new SqlParameter("#CreatedBy",ao.CreatedBy)
, new SqlParameter("#CreatedTime",ao.CreatedTime)
, new SqlParameter("#LastModifiedBy",ao.LastModifiedBy)
, new SqlParameter("#LastModifiedTime",ao.LastModifiedTime)
};
int result = int.Parse(SqlHelper.ExecuteScalar(HYPO.Utils.Config.ConnString, CommandType.StoredProcedure, "SP_Bill_Insert", Params).ToString());
return result;
}
catch (Exception ex)
{
if (ex.Message.Contains("duplicate"))
{
return -2;
}
return -1;
}
}

You need to use SqlDataAdapter to get the result of stored procedure in data table.
SqlDataAdapter da = new SqlDataAdapter();
da.SelectCommand = cmd;
da.Fill(dt);
dataGridView1.DataSource = dt;

you don't need a CommandReader for this, all you have to do is to use DataAdapter and DataSet. and bind the dataset into your DataGridView
DataSet ds = new DataSet();
using (SqlDataAdapter adapter = new SqlDataAdapter(cmd))
{
adapter.Fill(ds);
dataGridView1.DataSource = ds.Tables[0];
}

You can do it with DataTable Or DataSet To Fill Data.... Here i did with DataTable....
Datatable data = new Datatable();
using (SqlDataAdapter adp = new SqlDataAdapter())
{
adp.SelectCommand = cmd;
adp.Fill(data);
GridView1.DataSorce = data;
GridView1.DataBind(); <--- Needed to bind GridView at a time While Filling DataTable data
}
You Can Also Check If DataTable Contains Data Or Not By This Way Before assigning DataTable to Gridview1.......
if(data.Rows.Counnt > 0)
{
GridView1.DataSorce = data;
GridView1.DataBind();
}

public void whateverToolStripMenuItem_Click(object sender, EventArgs e) {
// A previously declared and instantiated OpenFileDialog, i put it from Design Mode, but you can just
// declare it as
OpenFileDialog dlgImport = new OpenFileDialog();
//We show the dialog:
dlgImport.ShowDialog();
// We declare a variable to store the file path and name:
string fileName = dlgImport.FileName;
try {
// We invoke our method, wich is created in the following section, and pass it two parameters
// The file name and .... a DataGridView name that we put is the Form, so we can also see what
// We imported. Cool, isn't it?
importExcel(fileName, gridMain);
}
// It is best to always try to handle errors, you will se later why it is OleDbException and not
catch (OleDbException ex) {
MessageBox.Show("Error ocurred: " + ex.Message);
}
}

Database Access in Combobox

How to insert the database access column in combobox, on button click?it has 1 column

Try this:
create a private method that get msaccess data and bind to a datatable:
private DataTable BindData()
{
using (var conn = new OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0; Data Source=C:\YOURDB.mdb; PersSecurity Info=False;")) /your connectionsting
{
using (var dAd = new OleDbDataAdapter("select ID,column1 from Table ", conn)) //select query from your DB
{
var dSet = new DataTable();
try
{
conn.Open();
dAd.Fill(dSet);
return dSet;
}
catch
{
throw;
}
finally
{
if (conn.State == ConnectionState.Open) conn.Close();
}
}
}
}
Then on your button click Add
var dt = BindData();
cmbBox.DataSource = dt;
cmbBox.DisplayMember = "column1"; //Display Table Column on your DB
cmbBox.ValueMember = "ID";
See also:
The C# Station ADO.NET Tutorial
Regards