GridView 支持这些操作。您可以添加一个CommandField
其中将包含命令按钮或 LinkButton(您可以选择按钮类型并分配每个按钮的文本)。这patientID
字段应包含在DataKeyNames
GridView 的属性,以便在更新或删除数据库中的记录时检索它。
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="false"
DataKeyNames="patientID"
OnRowEditing="GridView1_RowEditing" OnRowCancelingEdit="GridView1_RowCancelingEdit"
OnRowUpdating="GridView1_RowUpdating" OnRowDeleting="GridView1_RowDeleting" >
<Columns>
<asp:CommandField ShowEditButton="true" ShowCancelButton="true" ShowDeleteButton="true" />
<asp:BoundField HeaderText="Surgery" DataField="surgery" />
...
</Columns>
然后,您需要在代码隐藏中处理一些事件:
// The RowEditing event is called when data editing has been requested by the user
// The EditIndex property should be set to the row index to enter edit mode
protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e)
{
GridView1.EditIndex = e.NewEditIndex;
BindData();
}
// The RowCancelingEdit event is called when editing is canceled by the user
// The EditIndex property should be set to -1 to exit edit mode
protected void GridView1_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)
{
GridView1.EditIndex = -1;
BindData();
}
// The RowUpdating event is called when the Update command is selected by the user
// The EditIndex property should be set to -1 to exit edit mode
protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)
{
int patientID = (int)e.Keys["patientID"]
string surgery = (string)e.NewValues["surgery"];
string location = (string)e.NewValues["location"];
// Update here the database record for the selected patientID
GridView1.EditIndex = -1;
BindData();
}
// The RowDeleting event is called when the Delete command is selected by the user
protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e)
{
int patientID = (int)e.Keys["patientID"]
// Delete here the database record for the selected patientID
BindData();
}
由于数据必须在每个事件处理程序的末尾绑定到 GridView,因此您可以在BindData
实用程序函数,也应该在页面最初加载时调用:
private void BindData()
{
SqlCommand cmd = new SqlCommand("select surgery, patientID, location from details", conn);
SqlDataAdapter sda = new SqlDataAdapter(cmd);
DataTable dt = new DataTable();
sda.Fill(dt);
conn.Close();
GridView1.DataSource = dt;
GridView1.DataBind();
}
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
BindData();
}
}