how to rectify i this errors

Question

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Compiler Error Message: CS0029: Cannot implicitly convert type 'string' to 'System.DateTime'

Source Error:

C#

try {                                             // Line 71: 
    mydate3 = (mydate - mydate2).ToString();
    this.Label5.Text = "Time Left: " + mydate3.ToShortTimeString();
} catch (Exception ex) {

Compilation Error
Description: An error occurred during the compilation of a resource required to service this request. Please review the following specific error details and modify your source code appropriately.

Compiler Error Message: CS0266: Cannot implicitly convert type 'object' to 'int'. An explicit conversion exists (are you missing a cast?)

Source Error:

C#

foreach (object x_loopVariable in dt.Rows) {                         // Line 84:
    x= x_loopVariable  ;
    if (Convert.ToInt32(x["Selected"]) + 1 == Convert.ToInt32(x["correct"])); {
    marks += 1;

Posted 5-Nov-11 4:08am

2011999

Updated 5-Nov-11 4:11am

Richard MacCutchan

v2

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3 solutions

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Richard MacCutchan · Answer 1 · 2011-11-05T04:15:00

Solution 1

1. You cannot use an assignment expression to convert one type to another (e.g. string to DateTime) unless the type has an operator= that will accept the source type.

2. Do what the compiler tells you.

Check your C# reference manual for further details.

Posted 5-Nov-11 4:15am

Richard MacCutchan

Comments

Sergey Alexandrovich Kryukov 5-Nov-11 22:48pm

Correct, a 5.
--SA

RaisKazi · Answer 2 · 2011-11-05T04:23:00

Solution 2

Error: "CS0029: Cannot implicitly convert type 'string' to 'System.DateTime'"

Reason : Your below code.
mydate3 = (mydate - mydate2).ToString();

I guess Type of mydate3 is DateTime, and you are trying to assign a data of Type String to it.

Resolution: Modify your code as below.
mydate3 = mydate - mydate2;

Error: "CS0266: Cannot implicitly convert type 'object' to 'int'."

Reason: Your below code. Probably you are trying to assign object of DataRow to int variable.
x= x_loopVariable ;

Posted 5-Nov-11 4:23am

RaisKazi

Updated 5-Nov-11 4:28am

v2

Comments

2011999 5-Nov-11 10:49am

mydate3 = mydate - mydate2;
not working this code

Richard MacCutchan 5-Nov-11 12:11pm

The expression mydate - mydate2 returns a TimeSpan object, not a DateTime. You need to look at the documentation on MSDN for these objects.

RaisKazi 6-Nov-11 1:56am

Agree, that was my bad guess. :)

Richard MacCutchan 6-Nov-11 3:20am

I do that often!

2011999 5-Nov-11 13:09pm

if (Convert.ToInt32(x["Selected"]) + 1 == Convert.ToInt32(x["correct"]))
not working this also

2011999 5-Nov-11 13:27pm

Compiler Error Message: CS0029: Cannot implicitly convert type 'System.TimeSpan' to 'System.DateTime'

Source Error:

Line 73: try
Line 74: {
Line 75: mydate3 = mydate.Subtract(mydate2);
Line 76: this.Label5.Text = "Time Left: " + mydate3.ToShortTimeString();
Line 77: }

2011999 5-Nov-11 13:34pm

foreach (object drow_loopVariable in dt.Rows) {
drow = drow_loopVariable;
if (drow("Serial") == this.Label1.Text) {
drow("Selected") = this.RadioButtonList1.SelectedIndex;
break; // TODO: might not be correct. Was : Exit For

how to write in for each

Richard MacCutchan 6-Nov-11 3:19am

I repeat: go and read i) the MSDN reference for the classes you are trying to manipulate, and ii) the C# reference manual section on classes, objects, casting and conversions. These things do not happen automatically unless the class is written to deal with it. In many cases it cannot happen because the two classes are too different.

Ravi23march2012 · Answer 3 · 2012-08-10T00:01:00

C#

String Gender;
    if (DDGender.SelectedItem.Text  = Convert.ToString("--SELECT--" ))
    {
       Response.Write("Please Select the Gender");
    }
    else if (DDGender.SelectedItem.Text = "MALE")
    {
        Gender = DDGender.SelectedItem.Text;
        Response.Write("Select Gender" +Gender );
    }
    else
    {
        Gender = DDGender.SelectedItem.Text;
        Response.Write("Select Gender" + Gender);
    }


    }
Clarify the error