我试试这段代码
string[] ext = att.Name.Split('.');
string file = ext[0].ToString();
object Target = file + ".txt";
object nullobject = System.Reflection.Missing.Value;
Application.Documents.Open(ref FileName, ref nullobj, ref nullobj, ref nullobj, ref nullobj, ref nullobj, ref nullobj, ref nullobj, ref nullobj, ref value, ref value, ref nullobj, ref nullobj, ref nullobj, ref nullobj, ref nullobj);
object format = Microsoft.Office.Interop.Word.WdSaveFormat.wdFormatUnicodeText;
Application.ActiveDocument.SaveAs(ref Target, ref format,
ref Unknown, ref Unknown, ref Unknown,
ref Unknown, ref Unknown, ref Unknown,
ref Unknown, ref Unknown, ref Unknown,
ref Unknown, ref …Run Code Online (Sandbox Code Playgroud) 首先,我是 Xamarin.Form 的新手。我正在努力从 Google 获得最佳效果,但我什至无法对某些功能进行大量搜索。
我正在创建一个 Xamarin.Form 应用程序。在那个应用程序中,我将图像存储为base64 string格式sql server,我在 sql server 中的数据类型是varchar(Max).
我的问题是,如何将base64 string图像转换为图像并将图像绑定到列表视图。
列表视图代码:
<ListView x:Name="listView" HasUnevenRows="true" SeparatorColor="Gray">
<ListView.ItemTemplate>
<DataTemplate>
<ViewCell>
<Image Source="{Binding image}" Grid.Row="0"
Grid.RowSpan="3" Grid.Column="0"
HorizontalOptions="Center" HeightRequest="50"
VerticalOptions="Center">
<Image.GestureRecognizers>
<TapGestureRecognizer Tapped="OnImageTapped" />
</Image.GestureRecognizers>
</Image>
</ViewCell>
</DataTemplate>
</ListView.ItemTemplate>
</ListView>
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C#的代码:
Public async Task loadDeveloperList()
{
try
{
List<employee> employeeDetail = new List<employee>();
HttpClient client = new HttpClient();
StringBuilder sb = new StringBuilder();
client.MaxResponseContentBufferSize = 256000;
var RestUrl = "http://example.com/Getemployee/"; …Run Code Online (Sandbox Code Playgroud) 让我尽力解释这个问题.
基本上,我有一个字符串,我转换为char数组,然后我使用LINQ选择char数组内的不同字符,然后通过Descending排序,但只捕获字符,而不是标点符号等.这是代码:
string inputString = "The black, and, white cat";
var something = inputString.ToCharArray();
var txtEntitites = something.GroupBy(c => c)
.OrderByDescending(g => g.Count())
.Where(e => Char.IsLetter(e)).Select(t=> t.Key);
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我得到的错误信息:
错误CS1502:`char.IsLetter(char)'的最佳重载方法匹配有一些无效参数(CS1502)
错误CS1503:Argument #1' cannot convertSystem.Linq.IGrouping'表达式以键入`char'(CS1503)
有任何想法吗?谢谢 :)
如果path ="\ ProgramFiles\MobileApp\es-gl\a.dll".我想单独获得"\ ProgramFiles\MobileApp\es-gl".只想知道文件a.dll的父目录.c#中有任何内置方法吗?我正在使用.net Compact Framework