我在ASP.NET中创建了一个动态控制脚本。现在如下图所示...
现在我要做的是从UserDontrol生成的内容,带下划线的值我想将它们存储在数据库中。我创建了一个公共类,但在数据库中它存储为空值(非NULL)。
这些是代码:
.ascx.cs文件
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data.SqlClient;
using System.Configuration;
using System.Data;
public partial class UserControl_ContactDetails : System.Web.UI.UserControl
{
public String TextProperty
{
get
{
return LabelCmimi.Text;
}
set
{
LabelCmimi.Text = value;
}
}
public void Page_Load(object sender, EventArgs e)
{
//if(Page.IsPostBack)
//{
DropDownListArtikulli.Text = Request.Form[DropDownListArtikulli.UniqueID];
LabelCmimi.Text = Request.Form[LabelCmimi.UniqueID];
TextBoxSasia.Text = Request.Form[TextBoxSasia.UniqueID];
LabelVlera.Text = Request.Form[LabelVlera.UniqueID];
//}
Cmimi();
Vlera();
Session["Artikulli"] = DropDownListArtikulli.SelectedItem.ToString();
Session["Cmimi"] = LabelCmimi.Text;
Session["Sasia"] = TextBoxSasia.Text;
Session["Vlera"] = LabelVlera.Text;
}
public void Cmimi()
{
DataTable listaArtikujt = new DataTable();
using (SqlConnection lidhje = new SqlConnection(ConfigurationManager.ConnectionStrings["ConnString"].ConnectionString))
{
try
{
SqlDataAdapter adapter = new SqlDataAdapter("SELECT * FROM [Artikujt]", lidhje);
adapter.Fill(listaArtikujt);
DropDownListArtikulli.DataSource = listaArtikujt;
DropDownListArtikulli.DataTextField = "Artikulli";
DropDownListArtikulli.DataValueField = "Cmimi";
DropDownListArtikulli.DataBind();
LabelCmimi.Text = DropDownListArtikulli.SelectedValue.ToString();
}
catch (Exception ex)
{
Response.Write("Gabim:" + ex.ToString());
}
}
}
public void Vlera()
{
if(!string.IsNullOrEmpty(TextBoxSasia.Text))
{
LabelVlera.Text = TextBoxSasia.Text.ToString();
int a = Convert.ToInt32(LabelCmimi.Text);
int b = Convert.ToInt32(LabelVlera.Text);
int c = a * b;
LabelVlera.Text = c.ToString();
Session["Totali"] = (Session["Totali"] == null) ? 0 : Convert.ToInt32(Session["Totali"].ToString()) + c;
}
}
}
.aspx.cs文件
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data.SqlClient;
using System.Configuration;
using System.Data;
public partial class DynamicControl : System.Web.UI.Page
{
private const string VIEWSTATEKEY = "ContactCount";
protected void Page_Load(object sender, EventArgs e)
{
//Set the number of default controls
ViewState[VIEWSTATEKEY] = ViewState[VIEWSTATEKEY] == null ? 1 : ViewState[VIEWSTATEKEY];
Session["Totali"] = 0;
//Load the contact control based on Vewstate key
LoadContactControls();
}
private void LoadContactControls()
{
for (int i = 0; i < int.Parse(ViewState[VIEWSTATEKEY].ToString()); i++)
{
phContactDetails.Controls.Add(LoadControl("~/UserControl/ContactDetails.ascx"));
}
}
protected void btnAddMore_Click(object sender, EventArgs e)
{
ViewState[VIEWSTATEKEY] = int.Parse(ViewState[VIEWSTATEKEY].ToString()) + 1;
LoadContactControls();
}
protected void Button1_Click(object sender, EventArgs e)
{
}
protected void OK_Click(object sender, EventArgs e)
{
LabelTotal.Text = Session["Totali"].ToString();
}
}
问题是......当我按下“Dergo”按钮(Button1_Click)时,如何将值存储在数据库中?
P.S。一位朋友告诉我,问题是由用户控件在我的Page_Load事件中重新加载,所以我得到的值总是为空。 如果我想获得该值,他建议我在我的用户控件中添加一个事件,然后从事件中获取我的输入值。并参考链接http://msdn.microsoft.com/en-us/library/fb3w5b53(v=vs.100).aspx
我接受了他的建议,但我在两周前开始学习ASP.NET,但我没有成功。任何人都可以帮我提供更多信息或编写代码吗? 谢谢。
答案 0 :(得分:0)
您需要在.ascx.cs
上定义属性以返回dropdwon
,textbox
的值,并控制您需要其值...
在.aspx.cs
和click handler
中,您可以简单地阅读usercontrol
个属性,例如USERCONTROL_ID.DropDownValue
... DropDownValue
是您的用户控件上的属性,如下所示:
public string DropDownValue
{
get
{
return DropDownList1.SelectedValue;
}
}
然后您可以在database
你也可以有一个属性返回一个包含所有值的对象,如:
public UserControlValue Value
{
get
{
return new UserControlValue(DropDownList1.SelectedValue, TextBox1.Text);
}
}
public class UserControlValue
{
public UserControlValue(string property1, string property2)
{
this.property1 = property1;
this.property2 = property2;
}
public string property1 {get; set;}
public string property2 {get; set;}
}
并从aspx.cs
或USERCONTROL_ID.Value.property1
USERCONTROL_ID.Value.property2
阅读此内容
答案 1 :(得分:0)
如何在加载后获取控件的id并将其添加到会话
control o = LoadControl("~/UserControl/ContactDetails.ascx");
(Session["controlIDList"] as List<string>).Add(o.ID);
您之前需要创建会话,可能在page load
使用此
Session.Add("controlIDList", new List<string>());
从会话中的已保存ID列表中找到控件,然后转换为其类型,并获得所需的值...
(Session["controlIDList"] as List<string>).ForEach(u =>
{
var c = (TYPE_OF_USERCONTROL)this.Page.FindControl(u);
c.Value; // value is a property on user controls which return value of dropdown, textbox, and ....
});