ASP.NETプロジェクト申告システム-5.3~5.4(FileUploadとGridViewの使い方)
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5.3
GridViewでは、ある列の内容がその長さを超えると省略記号(...)が表示されます.GridViewを大きくするのではなくキーはGridViewのCssClassとItemStyleのCssClassです.
ページフロント:
Cssファイル:
5.4
FileUploadの使い方:
ページフロント:
JavaScriptコード:
バックグラウンドコード:
GridViewでは、ある列の内容がその長さを超えると省略記号(...)が表示されます.GridViewを大きくするのではなくキーはGridViewのCssClassとItemStyleのCssClassです.
ページフロント:
<TABLE cellSpacing=0 cellPadding=0 width="100%" border=0 style="font-size:small">
<tr>
<td align="center">
<asp:GridView ID="GridViewDown" runat="server" ShowHeader="false" ShowFooter="false" AllowPaging="true" PageSize="6"
AutoGenerateColumns="False" BorderWidth="0" Width="98%" GridLines="None" CssClass="GridViewCSS"
style="margin-bottom: 0px">
<PagerSettings Visible="false"/>
<Columns>
<asp:TemplateField>
<ItemTemplate>
<asp:Image ID="Imagelist" runat="server" ImageUrl="~/Images/homepage/list.gif" />
</ItemTemplate>
</asp:TemplateField>
<asp:HyperLinkField DataTextField="FileName" DataNavigateUrlFields="FileName" DataNavigateUrlFormatString="../Upload/Down/{0}">
<ItemStyle Width="96%" CssClass="content" />
</asp:HyperLinkField>
</Columns>
</asp:GridView>
</td>
</tr>
</TABLE>Cssファイル:
.GridViewCSS
{
table-layout: fixed;/* */
text-align:center;
}
.content
{
text-align:left;
width:100%;
/* */
overflow:hidden;
white-space:nowrap;
text-overflow:ellipsis; /* */
}5.4
FileUploadの使い方:
ページフロント:
<asp:HiddenField ID="HiddenFieldfilename" runat="server" />
<table cellspacing="0" cellpadding="0" class="TableMain">
<tr>
<td height="24px"class="TableLineItem" colspan="4">
<span style="color:White;font-size:medium"> </span>
</td>
</tr>
<tr>
<td class="TD1" rowspan="2"> </td>
<td>
<asp:FileUpload ID="FileUpload1" runat="server" Size="50"/>
</td>
<td width="30px">
<asp:Button ID="ButtonUpload1" runat="server" Text=" " OnClientClick="return beforeUploadUnit(1);"
onclick="ButtonUpload1_Click"/>
</td>
<td width="30px">
</td>
</tr>
<tr>
<td class="TDBottom">
<asp:Label ID="Label1" runat="server" Text=""></asp:Label>
</td>
<td width="30px" class="TDBottom">
<asp:Button ID="ButtonDown1" runat="server" Text=" " Visible="false"
onclick="ButtonDown1_Click"/>
</td>
<td width="30px" class="TDBottom">
<asp:Button ID="ButtonDelete1" runat="server" Text=" "
onclick="ButtonDelete1_Click" Visible="false"/>
</td>
</tr>
...
</table>JavaScriptコード:
function beforeUploadUnit(obj) {
var file = document.getElementById("FileUpload" + obj).value;
var fileArray = file.split('\\');
var filename = fileArray[fileArray.length - 1];
//
var suffix = filename.substring(filename.lastIndexOf(".") + 1);
if (suffix != "pdf" && suffix != "doc" && suffix != "docx" && suffix != "xls" && suffix != "xlsx" && suffix != "rar" && suffix != "zip") {
alert(" ， ！");
return false;
}
//
if (filename.length > 45) {
alert(" 45 ！");
return false;
}
//
var nameinfo = document.getElementById("HiddenFieldfilename").value;
var nameArray = nameinfo.split('|');
for (var i = 0; i < nameArray.length; i++) {
if (nameArray[i] == filename) {
break;
}
}
if (i < nameArray.length) {
alert(" ， ！");
return false;
}
return true;
}バックグラウンドコード:
//Page_Onload
// HiddenFieldfilename
private void removeFileName(string filename)
{
int startIndex = HiddenFieldfilename.Value.IndexOf(filename);
if (startIndex == 0)
{
if (filename.Length == HiddenFieldfilename.Value.Length)
{
HiddenFieldfilename.Value = "";
}
else
{
HiddenFieldfilename.Value = HiddenFieldfilename.Value.Remove(startIndex, filename.Length);
}
}
else
{
HiddenFieldfilename.Value = HiddenFieldfilename.Value.Remove(startIndex - 1, filename.Length + 1);
}
}
// HiddenFieldfilename
private void addFileName(string filename)
{
if (HiddenFieldfilename.Value == "")
{
HiddenFieldfilename.Value = filename;
}
else
{
HiddenFieldfilename.Value += "|" + filename;
}
}
protected void ButtonDelete1_Click(object sender, EventArgs e)
{
if (Label1.Text != "")
{
string id = Session["UnitID"].ToString();
string file = Server.MapPath("~/Upload/UnitAccessory") + "\\" + id + Label1.Text;
//
FileAttributes attrs = File.GetAttributes(file);
// 1 FileAttributes.ReadOnly
// ReadOnly 0
attrs = (FileAttributes)((int)attrs & ~(1));
File.SetAttributes(file, attrs);
File.Delete(file);
// HiddenFieldfilename
removeFileName(Label1.Text);
// ， ， table
UnitAccessoryManage accessManage = new UnitAccessoryManage();
if (HiddenFieldfilename.Value == "")
{
accessManage.Delete(id);
}
else
{
UnitAccessory access = accessManage.GetModel(id);
access.LegalLicense = null;
accessManage.Update(access);
}
Label1.Text = "";
ButtonDelete1.Visible = false;
ButtonDown1.Visible = false;
FileUpload1.Enabled = true;
ButtonUpload1.Enabled = true;
}
}
protected void ButtonUpload1_Click(object sender, EventArgs e)
{
if (FileUpload1.HasFile)
{
string fileFormat = FileUpload1.FileName.Substring(FileUpload1.FileName.LastIndexOf(".")+1);
//alert aspx
//ClientScript.RegisterStartupScript(this.GetType(), "", "<script>alert(' "+fileFormat+" ')</script>");
if (fileFormat != "doc" && fileFormat != "docx" && fileFormat != "xls" && fileFormat != "xlsx" && fileFormat != "pdf" && fileFormat != "rar" && fileFormat != "zip")
{
ClientScript.RegisterStartupScript(this.GetType(),"","<script>alert(' ， ！')</script>");
return;
}
if (FileUpload1.PostedFile.ContentLength> 6 * 1024 * 1024)
{
ClientScript.RegisterStartupScript(this.GetType(), "", "<script>alert(' 4MB， ！')</script>");
return;
}
string id = Session["UnitID"].ToString();
string filePath = Server.MapPath("~/Upload/UnitAccessory");
string filename = FileUpload1.FileName;
if (filename.Length > 45)
{
ClientScript.RegisterStartupScript(this.GetType(), "", "<script>alert(' 40 ， ！')</script>");
return;
}
string file = filePath + "\\" + id + filename;
if (File.Exists(file))
{
FileAttributes attrs = File.GetAttributes(file);
attrs = (FileAttributes)((int)attrs & ~(1));
File.SetAttributes(file, attrs);
}
UnitAccessoryManage accessManage = new UnitAccessoryManage();
UnitAccessory access;
try
{
FileUpload1.SaveAs(file);
if (accessManage.Exists(id))
{
access = accessManage.GetModel(id);
access.LegalLicense = filename;
accessManage.Update(access);
}
else
{
access = new UnitAccessory();
access.UnitID = id;
access.LegalLicense = filename;
accessManage.Add(access);
}
Label1.Text = filename;
ButtonDelete1.Visible = true;
ButtonDown1.Visible = true;
FileUpload1.Enabled = false;
ButtonUpload1.Enabled = false;
// HiddenFieldfilename
addFileName(filename);
}
catch (Exception ex)
{
Label1.Text = " :" + ex.Message.ToString();
}
}
}