我正在设计一个名为“myprofile”的asp.net C#中的网页。结构如下从上到下:文件上传控件(用于标识),下拉(用于酒店类型),富文本框(用于联系信息 - 额外:粗体,斜体,超链接等功能),下拉(用于位置)。
我的问题是在回发时保持文件上传控件和富文本框的值。此外,我无法在数据库中插入值,因为没有发生任何事情。我尝试了很多东西。最后,我将设计设置如下:
<asp:FileUpload ID="FileUpload1" runat="server" />
<asp:UpdatePanel ID="UpdatePanel1" runat="server" UpdateMode="Conditional">
<ContentTemplate>
<fieldset style="width:30%">
<legend>Update Panel-1</legend>
<br />(Type of Hotel)<br /><br />
<asp:DropDownList ID="DropDownTypeOfHotel" runat="server" CssClass="cssdropdown"></asp:DropDownList>
<br />(Contact Information Here)<br /><br />
<asp:TextBox ID="RichTextBoxContactInfo" runat="server"></asp:TextBox>
<br />(Location)<br /><br />
<asp:DropDownList ID="DropDownListLocation" runat="server" CssClass="cssdropdown"></asp:DropDownList>
</fieldset>
</ContentTemplate>
</asp:UpdatePanel>
<asp:UpdatePanel ID="UpdatePanel2" runat="server" UpdateMode="Conditional">
<ContentTemplate>
<fieldset style="width:30%">
<legend>Update Panel-2</legend>
<asp:Label ID="Label1" runat="server" Text="" ForeColor="Red"></asp:Label>
<br /><br />
<asp:Button ID="btnUpdate2" runat="server" Text="Update Both Panels" OnClick="btnUpdate2_Click" />
</fieldset>
</ContentTemplate>
</asp:UpdatePanel>
我的代码就在这里: -
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
loadHotelType();
}
Page.Form.Attributes.Add("enctype", "multipart/form-data");
}
protected void btnUpdate2_Click(object sender, EventArgs e)
{
if (DropDownTypeOfHotel.SelectedIndex > 0)
{
if (DropDownListLocation.SelectedIndex > 0)
{
if (!string.IsNullOrEmpty(RichTextBoxContactInfo.Text))
{
Label1.Text = "Cool!";
insert();
}
else
{
Label1.Text = "Kindly add contact info!";
}
}
else
{
Label1.Text = "Kindly select location!";
}
}
else
{
Label1.Text = "Kindly select type of hotel!";
}
}
public void loadHotelType()
{
DropDownTypeOfHotel.Items.Insert(0, "--Select Type of Hotel/Supplier--");
DropDownTypeOfHotel.Items.Insert(1, "2 star");
DropDownTypeOfHotel.Items.Insert(2, "3 star");
DropDownTypeOfHotel.Items.Insert(3, "5 star");
DropDownListLocation.Items.Insert(0, "--Select Location of Hotel/Supplier--");
DropDownListLocation.Items.Insert(1, "Canada");
DropDownListLocation.Items.Insert(2, "USA");
DropDownListLocation.Items.Insert(3, "LA");
}
public void insert()
{
int img_logo = 0;
static byte[] btlogo_img;
if (FileUpload1.PostedFile.ContentLength != 0)
{
btlogo_img = new byte[FileUpload1.PostedFile.ContentLength];
HttpPostedFile up1 = FileUpload1.PostedFile;
up1.InputStream.Read(btlogo_img, 0, (int)FileUpload1.PostedFile.ContentLength);
img_logo = 1;
}
if (img_logo == 1)
{
con1.Close();
con1.Open();
SqlCommand cmd = new SqlCommand("insert into file values('" + FileUpload1.PostedFile.FileName + "','" + btlogo_img + "')", con1);
cmd.ExecuteNonQuery();
con1.Close();
}
else
{
Label1.Text = "Kindly select logo!";
}
}
请建议我同样的。
答案 0 :(得分:0)
我找到的最简单的解决方案是保留控件,在回发时丢失值,在更新面板之外,并将所有其他控件保留在更新面板中。
这真的对我有用!