.net

问题 I am currently unsure on the best way of going about getting a filter to work right on a datagridview that has its datasource set to a list of objects. So given an object of: public class DepositAccountBill { #region Properties public int AccountBillID { get; set; } public int AccountID { get; set; } public string AccountNumber { get; set; } public string ControlNumber { get; set; } public DateTime BillDate { get; set; } public decimal DepositAmount { get; set; } } I have a datagridview table

问题 I am currently unsure on the best way of going about getting a filter to work right on a datagridview that has its datasource set to a list of objects. So given an object of: public class DepositAccountBill { #region Properties public int AccountBillID { get; set; } public int AccountID { get; set; } public string AccountNumber { get; set; } public string ControlNumber { get; set; } public DateTime BillDate { get; set; } public decimal DepositAmount { get; set; } } I have a datagridview table

问题 I can't understand if await statement is required when async method call is the last call in my async method. E.g. public async Task CallAsync(byte[] data) { await Call1Async(data); Call2Async(data); } public async Task Call1Async(byte[] data) { ... } public async Task Call2Async(byte[] data) { ... } The above would compile but with a warning "consider applying await to this method". But I think it would be waste of resources to apply await for the last call in the method. At the same time,

问题 I can't understand if await statement is required when async method call is the last call in my async method. E.g. public async Task CallAsync(byte[] data) { await Call1Async(data); Call2Async(data); } public async Task Call1Async(byte[] data) { ... } public async Task Call2Async(byte[] data) { ... } The above would compile but with a warning "consider applying await to this method". But I think it would be waste of resources to apply await for the last call in the method. At the same time,

问题 I have the following connection string, and you will notice "Provider's.Tests", notice the single quote, how do I enter this in to the web.config to make it valid? <connectionStrings> <clear/> <add name="Provider" connectionString="Data Source=.\SQLEXPRESS;AttachDbFilename="C:\Projects\Provider's.Tests\app_data\db.mdf";Integrated Security=True;User Instance=True" providerName="System.Data.SqlClient"/> </connectionStrings> 回答1: I don't think its the Provider's that is the problem, It is the

问题 I want to format (FAT32) removable drive with c# programming. In the internet I found a way, but the problem is that it opens the generic windows format program. But I want to do it with C# only and no built in windows support. My method is: // FAT32 Format Button click event [DllImport("shell32.dll")] static extern uint SHFormatDrive(IntPtr hwnd, uint drive, uint fmtID, uint options); 回答1: You can use wmi, there is a method that allow this. http://msdn.microsoft.com/en-us/library/aa390432

问题 I want to format (FAT32) removable drive with c# programming. In the internet I found a way, but the problem is that it opens the generic windows format program. But I want to do it with C# only and no built in windows support. My method is: // FAT32 Format Button click event [DllImport("shell32.dll")] static extern uint SHFormatDrive(IntPtr hwnd, uint drive, uint fmtID, uint options); 回答1: You can use wmi, there is a method that allow this. http://msdn.microsoft.com/en-us/library/aa390432

问题 How to show address bar in WebBrowser control in a Windows Form? 回答1: I could be mistaken but I don't believe the WebBrowserControl includes the address bar, toolbar, etc. I believe you'll have to create your own address bar. You could use the Navigated or Navigating events to determine when the URL is changing and update the text box. private void button1_Click(object sender, EventArgs e) { if (!string.IsNullOrEmpty(textBox1.Text)) { webBrowser1.Navigate(textBox1.Text); } } private void

问题 Let's say I have a string , and that string 's value is an amount of money, localized. By localized, I mean that if the country may use commas instead of decimal points, for example. (That's just one localization difference I know if.) How can I parse one of these string s into their decimal s numeric equivalents? Will decimal.TryParse() recognize localized formatting? How do I specify the CultureInfo with TryParse() ? 回答1: Here is an example of decimal.TryParse with a specified CultureInfo

问题 Let's say I have a string , and that string 's value is an amount of money, localized. By localized, I mean that if the country may use commas instead of decimal points, for example. (That's just one localization difference I know if.) How can I parse one of these string s into their decimal s numeric equivalents? Will decimal.TryParse() recognize localized formatting? How do I specify the CultureInfo with TryParse() ? 回答1: Here is an example of decimal.TryParse with a specified CultureInfo