C# C消息框一行多个显示
我正在为数据库的列表视图编写代码,我想保存所有的列,它保存了,但每行都显示一个messagebox。有人能帮我解决这个问题吗?当按钮点击时,我只想显示一个消息框。 这是我的代码C# C消息框一行多个显示,c#,database,winforms,foreach,messagebox,C#,Database,Winforms,Foreach,Messagebox,我正在为数据库的列表视图编写代码,我想保存所有的列,它保存了,但每行都显示一个messagebox。有人能帮我解决这个问题吗?当按钮点击时,我只想显示一个消息框。 这是我的代码 foreach (ListViewItem li in listView1.Items) { string condense = "datasource=localhost;port=3306;username=root;password=''"; string milk = "insert into c
foreach (ListViewItem li in listView1.Items)
{
string condense = "datasource=localhost;port=3306;username=root;password=''";
string milk = "insert into cashier.sales(Cashier,Orders,Quantity,Size,Price,Date) values ('" + this.cashier.Text + "','" + li.SubItems[0].Text + "','" + li.SubItems[1].Text + "','" + li.SubItems[2].Text + "','" + li.SubItems[3].Text + "','" + this.dateTimePicker1.Value + "');";
MySqlConnection conDatabase = new MySqlConnection(condense);
MySqlCommand cmdDatabase = new MySqlCommand(milk, conDatabase);
MySqlDataReader myReader;
if (string.IsNullOrEmpty(cashier.Text))
{
MessageBox.Show("Please fill the Notes. ", "Error!", MessageBoxButtons.OK, MessageBoxIcon.Warning);
}
else
{
conDatabase.Open();
myReader = cmdDatabase.ExecuteReader();
MessageBox.Show("Order has been added successfully ", "Order!", MessageBoxButtons.OK, MessageBoxIcon.Information);
total.Text = "";
amount.Text = "";
change.Text = "";
while (myReader.Read())
{
}
}
}
将MessageBox移到循环之外
foreach (ListViewItem li in listView1.Items)
{
string condense = "datasource=localhost;port=3306;username=root;password=''";
string milk = "insert into cashier.sales(Cashier,Orders,Quantity,Size,Price,Date) values ('" + this.cashier.Text + "','" + li.SubItems[0].Text + "','" + li.SubItems[1].Text + "','" + li.SubItems[2].Text + "','" + li.SubItems[3].Text + "','" + this.dateTimePicker1.Value + "');";
MySqlConnection conDatabase = new MySqlConnection(condense);
MySqlCommand cmdDatabase = new MySqlCommand(milk, conDatabase);
MySqlDataReader myReader;
if (string.IsNullOrEmpty(cashier.Text))
{
MessageBox.Show("Please fill the Notes. ", "Error!", MessageBoxButtons.OK, MessageBoxIcon.Warning);
}
else
{
conDatabase.Open();
myReader = cmdDatabase.ExecuteReader();
total.Text = "";
amount.Text = "";
change.Text = "";
while (myReader.Read())
{
}
}
}
MessageBox.Show("Orders has been added successfully ", "Order!", MessageBoxButtons.OK, MessageBoxIcon.Information);
把你的messagebox.show放在foreach循环之外。现在你说每行显示消息框…omg。非常感谢。简单的逻辑是,消息框显示代码在循环中。你需要把它放在外面。