C# – How to delete the row from datagridview

cdatagridviewwinforms

Friends, I'm using datagridview in my windows C# application. We know that When the form with datagridview is loaded a default row is created in the grid. If we type anything in any cell(I've total 6 columns, 2 hidden columns), a new row is created. But if we delete the entry the newly created row is not deleted. In this way we can create as many row we want without keeping any value inside any cell. I want the datagridview to maximum create 2 such rows and when in both the rows, no value is present, the last row to be deleted (so that grid will have 1 row without any data in it). I've tried to remove row in datagridview1_CellValueChanged event, but it's not working. Which event should I use and how can I get the desired functionality? Please help.

Best Answer

Try this:

DataGridView1.Rows.Remove(row);

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C# – the difference between String and string in C#

string is an alias in C# for System.String.
So technically, there is no difference. It's like int vs. System.Int32.

As far as guidelines, it's generally recommended to use string any time you're referring to an object.

e.g.

string place = "world";

Likewise, I think it's generally recommended to use String if you need to refer specifically to the class.

e.g.

string greet = String.Format("Hello {0}!", place);

This is the style that Microsoft tends to use in their examples.

It appears that the guidance in this area may have changed, as StyleCop now enforces the use of the C# specific aliases.

C# – How to cast int to enum

From an int:

YourEnum foo = (YourEnum)yourInt;

From a string:

YourEnum foo = (YourEnum) Enum.Parse(typeof(YourEnum), yourString);

// The foo.ToString().Contains(",") check is necessary for enumerations marked with an [Flags] attribute
if (!Enum.IsDefined(typeof(YourEnum), foo) && !foo.ToString().Contains(","))
{
    throw new InvalidOperationException($"{yourString} is not an underlying value of the YourEnum enumeration.")
}

Update:

From number you can also

YourEnum foo = (YourEnum)Enum.ToObject(typeof(YourEnum) , yourInt);

Best Answer

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C# – the difference between String and string in C#

This is the style that Microsoft tends to use in their examples.

C# – How to cast int to enum

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