C# 在 flowlayoutpanel 中动态添加控件
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Add controls dynamically in flowlayoutpanel
提问by Karlx Swanovski
In a windows form, I can add control dynamically by doing this:
在 Windows 窗体中，我可以通过执行以下操作动态添加控件：
for (int i = 0; i < 5; i++)
{
Button button = new Button();
button.Location = new Point(160, 30 * i + 10);
button.Tag = i;
this.Controls.Add(button);
}
How do I add controls dynamically in a FlowLayoutPanel?
如何在 a 中动态添加控件FlowLayoutPanel？
采纳答案by Idle_Mind
For a FlowLayoutPanel, you don't need to specify a location since the controls are arranged for you. Just change "flowLayoutPanel1" to the name of your FlowLayoutPanel:
对于 a FlowLayoutPanel，您无需指定位置，因为已为您安排了控件。只需将“ flowLayoutPanel1”更改为您的名称FlowLayoutPanel：
for (int i = 0; i < 5; i++)
{
Button button = new Button();
button.Tag = i;
flowLayoutPanel1.Controls.Add(button);
}
回答by Sherif Hamdy
Make items flow dynamically from database(sql server) to flowLayoutPanel1 :
使项目从数据库（sql server）动态流到 flowLayoutPanel1 ：
void button1_Enter(object sender, EventArgs e)
{
Button btn = sender as Button;
btn.BackColor = Color.Gold;
}
void button1_Leave(object sender, EventArgs e)
{
Button btn = sender as Button;
btn.BackColor = Color.Green;
}
private void form1_Load(object sender, EventArgs e)
{
flowLayoutPanel1.Controls.Clear();
SqlConnection cn = new SqlConnection(@"server=.;database=MyDatabase;integrated security=true");
SqlDataAdapter da = new SqlDataAdapter("select * from Items order by ItemsName", cn);
DataTable dt = new DataTable();
da.Fill(dt);
for (int i = 0; i < dt.Rows.Count; i++)
{
Button btn = new Button();
btn.Name = "btn" + dt.Rows[i][1];
btn.Tag = dt.Rows[i][1];
btn.Text = dt.Rows[i][2].ToString();
btn.Font = new Font("Arial", 14f, FontStyle.Bold);
// btn.UseCompatibleTextRendering = true;
btn.BackColor = Color.Green;
btn.Height = 57;
btn.Width = 116;
btn.Click += button1_Click; // set any method
btn.Enter += button1_Enter; //
btn.Leave += button1_Leave; //
flowLayoutPanel1.Controls.Add(btn);
}
