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POUpdating and Deleting Records from the DataGridView and database
 

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  1. POUpdating and Deleting Records from the DataGridView and database
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    <p>i m new here, i want to update and delete the records from the datagridview as well as from database i have the following code for the update and delete..</p> <pre><code>int num = 0; foreach (DataGridViewRow row in this.dataGridView1.Rows) { if (Convert.ToBoolean(row.Cells[0].Value)) { string ID = this.dataGridView1.Rows[row.Index].Cells["ID"].Value.ToString(); string CoCode = this.dataGridView1.Rows[row.Index].Cells["CoCode"].Value.ToString(); string CoName_mar = this.dataGridView1.Rows[row.Index].Cells["CoName_mar"].Value.ToString(); con.ConnectionString = "PROVIDER=Microsoft.Jet.OLEDB.4.0;Data Source=C:\\Documents and Settings\\mayur patil\\My Documents\\Dairy_db\\tblCompany_1.mdb"; con.Open(); OleDbCommand cmd = new OleDbCommand("UPDATE tblCompany_1 SET (CoCode=@CoCode,CoName_mar=@CoName_mar where ID=@ID)", con); cmd.Parameters.AddWithValue("CoCode", CoCode); cmd.Parameters.AddWithValue("CoName_mar", CoName_mar); cmd.Parameters.AddWithValue("ID", ID); cmd.ExecuteNonQuery(); con.Close(); num++; } } if (num &gt; 0) { MessageBox.Show("Record Updated !"); } this.Hide(); listOfCompany v = new listOfCompany(); v.ShowDialog(); </code></pre> <p>Add for delete records..</p> <pre><code>OleDbConnection con = new OleDbConnection(); con.ConnectionString = "PROVIDER=Microsoft.Jet.OLEDB.4.0;Data Source=C:\\Documents and Settings\\mayur patil\\My Documents\\Dairy_db\\tblCompany.mdb"; OleDbCommand cmd = new OleDbCommand ("DELETE FROM tblCompany WHERE (CoCode = i)"); con.Open(); cmd.ExecuteNonQuery(); con.Close(); </code></pre> <ol> <li><p>for the update query i m getting the error that"OleDbException was handled syntax error in UPDATE" at <code>cmd.ExecuteNonQuery();</code></p></li> <li><p>for the delete query i m getting the error "OleDbException was handled.. Could not find installable ISAM." at <code>con.Open();</code></p></li> </ol> <p>how should i overcome from this problem?</p>
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