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Connection string using Windows Authentication
...he username and password with Integrated Security=SSPI;
So the connection string should be
<connectionStrings>
<add name="NorthwindContex"
connectionString="data source=localhost;
initial catalog=northwind;persist security info=True;
Integrated Security=SSPI;"
providerNam...
Duplicate headers received from server
...e fine. My function to make a valid filename is below.
public static string MakeValidFileName(string name)
{
string invalidChars = Regex.Escape(new string(System.IO.Path.GetInvalidFileNameChars()));
string invalidReStr = string.Format(@"[{0}]+", invalidChars);
strin...
How to handle checkboxes in ASP.NET MVC forms?
... foreach (Guid guid in selectedObjects) {
Response.Write(guid.ToString());
}
Response.End();
return (new EmptyResult());
}
This example will just write the GUIDs of the boxes you checked; ASP.NET MVC maps the GUID values of the selected checkboxes into the Guid[] selectedObj...
What is [Serializable] and when should I use it?
...from one domain to another, passing an object through a firewall as an XML string, or maintaining security or user-specific information across applications.
Apply SerializableAttribute to a type to indicate that instances of this type can be serialized. Apply the SerializableAttribute even if the cl...
Get pandas.read_csv to read empty values as empty string instead of nan
...das library to read in some CSV data. In my data, certain columns contain strings. The string "nan" is a possible value, as is an empty string. I managed to get pandas to read "nan" as a string, but I can't figure out how to get it not to read an empty value as NaN. Here's sample data and outp...
How to use ternary operator in razor (specifically on HTML attributes)?
...side my view to be based on some value
and that text is retrieved form App string Resources
so, this @() is the solution
<a href='#'>
@(Model.ID == 0 ? Resource_en.Back : Resource_en.Department_View_DescartChanges)
</a>
if the text is not from App string Resources use this
@(...
SQL WHERE.. IN clause multiple columns
...ur columns are numeric, some SQL dialects will require you to cast them to strings first. I believe SQL server will do this automatically.
To wrap things up: As usual there are many ways to do this in SQL, using safe choices will avoid suprises and save you time and headaces in the long run.
...
cannot convert data (type interface {}) to type string: need type assertion
... example, you were asserting data (type interface{}) has the concrete type string. If you are wrong, the program will panic at runtime. You do not need to worry about efficiency, checking just requires comparing two pointer values.
If you were unsure if it was a string or not, you could test using ...
How do I serialize an object and save it to a file in Android?
...
SharedPreferences.Editor ed=mPrefs.edit();
Gson gson = new Gson();
ed.putString("myObjectKey", gson.toJson(objectToSave));
ed.commit();
Option 2 is twice quicker than option 1
The option 2 inconvenience is that you have to make specific code for read:
Gson gson = new Gson();
JsonParser parser=...
MVC 5 Seed Users and Roles
...thod in Migrations>Configurations.cs.
// role (Const.getRoles() return string[] whit all roles)
var RoleManager = new RoleManager<IdentityRole>(new RoleStore<IdentityRole>(context));
for (int i = 0; i < Const.getRoles().Length; i++)
{
if (RoleManager.RoleExist...