Question

我试图允许（用户）从数据库中删除数据并用更新的信息替换它。

我遇到的问题是：

SqlException未处理：＆＃39;，＆＃39;附近的语法不正确。

此错误出现在第一个：sqlcmd.ExecuteNonQuery()

以下是＆＃34;应用编辑＆＃34;的完整代码。按钮：

private void applybtn_Click(object sender, EventArgs e)
{
        Connection();
        sqlconnection.Open();

        sqlcmd = new SqlCommand("DELETE Item, Quantity, description, datasheet FROM inventory_table WHERE id= " + ID, sqlconnection);
        sqlcmd.ExecuteNonQuery();

        sqlcmd = new SqlCommand("UPDATE inventory_table SET Item = @Item, Quantity = @Quantity, description = @description, datasheet = @datasheet "+
            "WHERE id= " + ID, sqlconnection);
        sqlcmd.Parameters.AddWithValue("@Item", this.txtbx1.Text);
        sqlcmd.Parameters.AddWithValue("@Quantity", this.txtbx2.Text);
        sqlcmd.Parameters.AddWithValue("@description", this.txtbx3.Text);
        sqlcmd.Parameters.AddWithValue("@datasheet", this.txtbx4.Text);
        sqlcmd.ExecuteNonQuery();

        sqlconnection.Close();    
    }

Answer 1

试试这个

private void applybtn_Click(object sender, EventArgs e)
{
        Connection();
        sqlconnection.Open();

        sqlcmd = new SqlCommand("DELETE FROM inventory_table WHERE id= " + ID, sqlconnection);
        sqlcmd.ExecuteNonQuery();

        sqlcmd = new SqlCommand("UPDATE inventory_table SET Item = @Item, Quantity = @Quantity, description = @description, datasheet = @datasheet "+
            "WHERE id= " + ID, sqlconnection);
        sqlcmd.Parameters.AddWithValue("@Item", this.txtbx1.Text);
        sqlcmd.Parameters.AddWithValue("@Quantity", this.txtbx2.Text);
        sqlcmd.Parameters.AddWithValue("@description", this.txtbx3.Text);
        sqlcmd.Parameters.AddWithValue("@datasheet", this.txtbx4.Text);
        sqlcmd.ExecuteNonQuery();

        sqlconnection.Close();    
    }

从数据库行删除特定数据（C＃）

1 个答案: