我使用从数据库加载的数据设置我的textBox Text属性。稍后，用户输入新值并单击“保存”将此信息更新到数据库中。我的问题是textBox.Text永远不会改变它的值。
我的文字框
<asp:TextBox ID="firstNameModal" runat="server" Width="300px" />
加载数据时：
private void loadMyAccount(int id)
{
var query = (from u in db.Users
where u.Id == id
select u).FirstOrDefault();
// Modal data
firstNameModal.Text = query.FirstName;
}
我的保存按钮调用方法来更新FirstName值：
protected void saveProfile_Click(object sender, EventArgs e)
{
try
{
int id = (int)HttpContext.Current.Session["userId"];
var query = (from u in db.Users
where u.Id == id
select u).FirstOrDefault();
query.FirstName = firstNameModal.Text;
db.SaveChanges();
} catch(Exception ex)
{
Console.Write(ex.ToString());
}
}
我是webforms的新手，但我做错了什么？
这是我的表格：
<form id="form1" runat="server">
<uc:Header ID="homeHeader" runat="server" />
<div class="col-xs-12 col-sm-12 col-md-6 col-lg-6 col-xs-offset-0 col-sm-offset-0 col-md-offset-3 col-lg-offset-3 toppad" >
<div class="panel panel-info">
<div class="panel-heading">
<h3 class="panel-title"><asp:Label ID="UserName" runat="server"/></h3>
</div>
<div class="panel-body">
<div class="row">
<div class="col-md-3 col-lg-3 " align="center"> <img alt="User Pic" src="../img/myAccount.png" class="img-circle img-responsive" /> </div>
<div class=" col-md-9 col-lg-9 ">
<table class="table table-user-information">
<tbody>
<tr>
<td>Full Name:</td>
<td><asp:Label ID="fullName" runat="server" /></td>
</tr>
<tr>
<td>Date of Birth</td>
<td><asp:Label ID="dob" runat="server" /></td>
</tr>
<tr>
<td>Gender</td>
<td><asp:Label ID="gender" runat="server" /></td>
</tr>
<tr>
<td>Phone</td>
<td><asp:Label ID="phone" runat="server" /></td>
</tr>
<tr>
<td>Home Address</td>
<td><asp:Label ID="homeAddress" runat="server" /></td>
</tr>
</tbody>
</table>
</div>
</div>
</div>
<div class="panel-footer">
<asp:Button ID="editProfile" runat="server" CssClass="btn btn-primary" Text="Edit Profile" OnClientClick="$('#editProfileModal').modal(); return false;" />
<asp:Button ID="myBooks" runat="server" CssClass="btn btn-primary" Text="View my books" OnClick="myBooks_Click" />
</div>
</div>
</div>
<!--- Modal Edit Profile --->
<div class="modal fade" id="editProfileModal" tabindex="-1" role="dialog" aria-labelledby="myModalLabel" aria-hidden="true">
<div class="modal-dialog">
<div class="modal-content">
<div class="modal-header">
<button aria-hidden="true" data-dismiss="modal" class="close" type="button">X</button>
<h4 class="modal-title"><strong><asp:Label ID="modalFullName" runat="server" /></strong></h4>
</div>
<div class="modal-body">
<div class="alert alert-info fade in">
<asp:Label runat="server" Text="First Name:" Width="90px" />
<asp:TextBox ID="firstNameModal" runat="server" Width="300px" /> <br /> <br />
<asp:Label runat="server" Text="Last Name:" Width="90px" />
<asp:TextBox ID="lastNameModal" runat="server" Width="300px" /> <br /> <br />
<asp:Label runat="server" Text="Date of Birth:" Width="90px" />
<asp:TextBox ID="dobModal" runat="server" Width="300px" /> <br /> <br />
<asp:Label runat="server" Text="Gender:" Width="90px" />
<asp:TextBox ID="genderModal" runat="server" Width="300px" /> <br /> <br />
<asp:Label runat="server" Text="Phone:" Width="90px" />
<asp:TextBox ID="phoneModal" runat="server" Width="300px" /> <br /> <br />
<asp:Label runat="server" Text="Address:" Width="90px" />
<asp:TextBox ID="homeAddressModal" runat="server" Width="300px" /> <br /> <br />
</div>
</div>
<div class="modal-footer">
<asp:Button ID="saveProfile" OnClick="saveProfile_Click" runat="server"
CssClass="btn btn-primary" Text="Save" />
<button data-dismiss="modal" class="btn btn-default" type="button">Close</button>
</div>
</div>
</div>
</div>
</form>
代码背后：
public partial class Views_MyAccount : System.Web.UI.Page
{
LibraryEntities db = new LibraryEntities();
protected void Page_Load(object sender, EventArgs e)
{
if(HttpContext.Current.Session["userId"].Equals(0))
{
Response.Redirect("Login.aspx");
}
else
{
loadMyAccount((int) HttpContext.Current.Session["userId"]);
}
}
private void loadMyAccount(int id)
{
var query = (from u in db.Users
where u.Id == id
select u).FirstOrDefault();
UserName.Text = query.FirstName + " " + query.LastName;
fullName.Text = query.FirstName + query.LastName;
DateTime dt = (DateTime) query.Dob;
dob.Text = dt.ToString("MM/dd/yyyy");
gender.Text = (query.Gender == false ? "Female" : "Male");
phone.Text = query.Phone;
homeAddress.Text = query.Address;
// Modal data
modalFullName.Text = query.FirstName + " " + query.LastName;
firstNameModal.Text = query.FirstName;
lastNameModal.Text = query.LastName;
dobModal.Text = dt.ToString("MM/dd/yyyy");
genderModal.Text = (query.Gender == false ? "Female" : "Male");
phoneModal.Text = query.Phone;
homeAddressModal.Text = query.Address;
}
protected void myBooks_Click(object sender, EventArgs e)
{
}
protected void saveProfile_Click(object sender, EventArgs e)
{
try
{
int id = (int)HttpContext.Current.Session["userId"];
var query = (from u in db.Users
where u.Id == id
select u).FirstOrDefault();
query.FirstName = firstNameModal.Text;
db.SaveChanges();
} catch(Exception ex)
{
Console.Write(ex.ToString());
}
}
}
答案 0 :(得分：1)
仔细检查文本框和保存配置文件按钮是否在同一个<form runat="server"> HTML标记中。通常，当页面使用site.master文件时就是这种情况。
之后，尝试使用调试器检查页面生命周期的不同事件中文本框的值。
编辑：
我认为您需要将loadMyAccount方法包装在IsPostBack条件中，如下所示：
protected void Page_Load(object sender, EventArgs e)
{
if(HttpContext.Current.Session["userId"].Equals(0))
{
Response.Redirect("Login.aspx");
}
else
{
if(!IsPostBack)
{
loadMyAccount((int) HttpContext.Current.Session["userId"]);
}
}
}
这会阻止您的Page_Load覆盖用户的输入。