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Anna Rita
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58.2k
Visual c# visualizzare tabelle dentro un datagridView
Jun 19 2014 3:34 PM
Ciao a tutti,
tramite il controllo OpenFileDialog in un Windows Form, sto cercando di aprire delle tabelle e renderle visibili dentro un dataGridView, ma continua a darmi errori.
Qualcuno sa aiutarmi???
Come Database ho preso come esempio Northwind in Sql Server 2008R2, anche xkè poi dovrò farlo con quello dell'azienda e stavo facendo delle prove, ma nessun risultato....
Vi posto il mio codice, ok?
[\CODE]
private void Form1_Load(object sender, EventArgs e)
{
SqlConnection MyConn = new SqlConnection();
DialogResult dr;
dr = openFileDialog1.ShowDialog();
if (dr == DialogResult.OK)
{
string strFile = openFileDialog1.FileName;
MyConn.ConnectionString = "provider= System.Data.SqlClient" +
"System.Data.SqlClient;Data Source =MATY-16-02-2008\\SQLEXPRESS"
+ strFile + ";";
MyConn.Open();
SqlCommand MyCMD = new SqlCommand();
MyCMD.CommandText = "Select Nome CategoryID," + "CategoryName," +
"Description," + "Picture" + "from Categories";
MyCMD.Connection = MyConn;
SqlDataAdapter MyDataAdapter = new SqlDataAdapter();
MyDataAdapter.SelectCommand = MyCMD;
DataSet ds = new DataSet();
ds.Clear();
MyDataAdapter.Fill(ds, "Categories");
dataGridView1.DataSource = ds;
dataGridView1.DataMember = "Categories";
}
private void button1_Click(object sender, EventArgs e)
{
openFileDialog1.InitialDirectory = "c:\\";
openFileDialog1.Filter = "txt files (*.txt)|*.txt|All files (*.*)|*.*";
openFileDialog1.FilterIndex = 2;
openFileDialog1.RestoreDirectory = true;
if (openFileDialog1.ShowDialog () == DialogResult.OK)
{
textBox1.Text = openFileDialog1.FileName;
}
}
private void button2_Click(object sender, EventArgs e)
{
//preparo la lista di campi
List<string> ListaCampi = new List<string>();
//Ricava il nome della tabella
string Tbl = textBox1.Text;
string[] Table = Tbl.Split('\\');
int numPos = Table.Length;
string TblNameDB = Table[numPos - 1];
string TblName = TblNameDB.Substring(0, TblNameDB.Length - 3);
string QUERY = "";
switch (TblName.ToUpper())
{
case "Categories":
QUERY = "Select * From Categories";
break;
//default:
}
SqlDataAdapter da = new SqlDataAdapter(QUERY,
ConfigurationSettings.AppSettings["ConnString"]);
SqlCommand MyCMD = new SqlCommand();
MyCMD.CommandText = "select * from TableNameDB";
SqlConnection MyConn = new SqlConnection();
MyCMD.Connection = MyConn;
MyConn.Close();
DataTable ds = new DataTable();
da.Fill(ds);
dataGridView1.DataSource = ds;
dataGridView1.AutoResizeColumns();
}
}
}
[\CODE]
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Answers (
0
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referring a library
Multithreading in WebService