[英]delete and update the selected row
executenonquery is my problem, this code works on other button in different datagridview executenonquery是我的问题,此代码适用于不同datagridview中的其他按钮
here's my code at delete button 这是我在删除按钮上的代码
private void button4_Click_2(object sender, EventArgs e)
{
SqlConnection con = new SqlConnection(@"Data Source=XXYZZ\SQLEXPRESS;Initial Catalog=rick_inventiory;Integrated Security=True");
SqlCommand cmd = con.CreateCommand();
cmd.CommandType = CommandType.Text;
cmd.CommandText = "Delete from tbl_Orders where CustomersID2 = '" + dataGridView5.SelectedRows[0].Cells[0].Value.ToString() + "'";
con.Open();
cmd.Parameters.AddWithValue("@CustomerID2", txtCustomerID2.Text);
cmd.ExecuteNonQuery();
con.Close();
disp_data();
MessageBox.Show("Deleted Successfully");
}
the update code still execute sa code but did not update it and heres my code for Update button 更新代码仍然执行sa代码,但没有更新它,这是我的Update按钮代码
SqlConnection con = new SqlConnection(@"Data Source=XXYZZ\SQLEXPRESS;Initial Catalog=rick_inventiory;Integrated Security=True");
con.Open();
SqlCommand cmd = con.CreateCommand();
cmd.CommandType = CommandType.Text;
cmd.CommandText = "Update tbl_Products SET ProductName='" + txtProName.Text +
"',Stocks='" + txtStocks.Text + "',Price='" + txtPrice.Text + "',Description='" +
txtDesc.Text + "',CategoryName='" + txtCat.Text + "' where ProductID ='" + txtProID.Text + "';";
cmd.ExecuteNonQuery();
SqlDataAdapter da = new SqlDataAdapter("Select * from tbl_Products", con);
DataTable dt = new DataTable();
da.Fill(dt);
dataGridView1.DataSource = dt;
MessageBox.Show("Successfuly Updated");
con.close();
In update there is a syntax problem remove inner side semi colon of update query 在更新中存在语法问题,删除更新查询的内侧半冒号
While in delete you want to change the line 在删除时,您想更改行
from 从
cmd.Parameters.AddWithValue("@CustomerID2", txtCustomerID2.Text); cmd.Parameters.AddWithValue(“ @ CustomerID2”,txtCustomerID2.Text);
to 至
cmd.Parameters.AddWithValue("@CustomerID2", '" + dataGridView5.SelectedRows[0].Cells[0].Value.ToString() + "'); cmd.Parameters.AddWithValue(“ @ CustomerID2”,'“ + dataGridView5.SelectedRows [0] .Cells [0] .Value.ToString()+”');
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