Re: C# 2010 edit - C# Discussion Boards

Re: databinding in the constuctor not working properly

4-Jun-12 4:18

matleeds wrote:
don't ever assume

The one assumption that seems valid most of the time is this: if it doesn't work, I assume I did something wrong.

Big Grin | :-D

Luc Pattyn [My Articles] Nil Volentibus Arduum

mallikharjuna2214-Jun-12 21:20

mallikharjuna221

4-Jun-12 21:20

Hi,

Please see the Example below,the same way i opened modal dialog,which is showing Data also.

public partial class Form2 : Form
{
public Form2()
{
InitializeComponent();
DataSet ds = new DataSet("myds");
DataTable dt = new DataTable("mydt");
dt.Columns.Add("mycol");
dt.Rows.Add("a");

ds.Tables.Add(dt);
dataGridView1.DataSource = ds.Tables[0];

}
}

//Opening the Modal dialog.

Form2 f = new Form2();
f.ShowDialog();

C# 2010 edit

dcof3-Jun-12 18:08

dcof

3-Jun-12 18:08

Right now a C#.net 2010 application edits the columns for field1 and field2 separately. Now I need to combine the edits together since the two columns are related to each other alot.

Thus here is the following code, can you tell me how you would combine the edits together for these two columns:

(note: data table is obtained from information loaded into an excel 2003 spreadsheet)

        public override List<ColumnNames> GetColumnNames()
        {
            List<ColumnNames> list = base.GetColumnNames();
            list.Add(ColumnNames.filed1);
            list.Add(ColumnNames.field2);
            return list;
        }
       
        public override List<RuleError> ValidateData(DateTime receivedDate)
        {
           
            base.ValidateData(receivedDate);
            DataTable excelData = ExcelDataTable;          
            string colName = ColumnNames.field2.ToString();
            string field2ColName = colMap[colName].ToString();
            colName = ColumnNames.filed1.ToString();
            string field1ColName = colMap[colName].ToString();      

            int iEnd = excelData.Rows.Count;
            for (int i = DataRowNumber - 1; i < iEnd; i++)
            {
                //First validate all common fields from ColumnMap
                DataRow dr = excelData.Rows[i];

                          
                {
                    //Call Base class function to validate common fields
                    List<RuleError> list = Validate(dr, receivedDate, didc);
                    if (list == null)
                        list = new List<RuleError>();

                    string field1 = dr[field1ColName].ToString();
                    re = Validatefield1ible(field1);
                    if (re != null)
                    {
                        list.Add(re);
                    }

                    string colVal = dr[field2ColName].ToString();
                    re = Validatefield2(colVal);
                    if (re != null)
                    {
                        list.Add(re);
                    }
             
            }
            excelData.AcceptChanges();
            didc.Dispose();

            return masterList;
        }

        public override List<RuleError> LoadData(ImportWkbk wb, string destDocLoc)
        {
           

            string colName = ColumnNames.field2.ToString();
            string field2ColName = colMap[colName].ToString();
            colName = ColumnNames.filed1.ToString();
            string field1ColName = colMap[colName].ToString();
           
            Hashtable htSubs = new Hashtable();

            Int64 submissionID = 0;
            VCust firstCust = null;
            int iEnd = ExcelDataTable.Rows.Count;
            for (int i = DataRowNumber - 1; i < iEnd; i++)
            {
                DataRow dr = ExcelDataTable.Rows[i];
                                 try
                    {
                                        
                        string field1 = dr[field1ColName].ToString().Trim().ToUpper();
                        lis.filed1 = field1.Length > 0 ? field1 : null;
                        string field2 = dr[field2ColName].ToString().Trim().ToUpper();
                        lis.field2 = field2.Length > 0 ? field2 : null;

            didc.SubmitChanges();
            didc.Dispose();
            return null;
        }

       
                   

      
        public RuleError Validatefield1ible(string field1)
        {
            RuleError re = null;
            if (field1 == null || field1.Trim().Length < 1)
                return null;

            if (field1.Trim().ToUpper().Equals (field1ibleStatus.PART) ||
                field1.Trim().ToUpper().Equals (field1ibleStatus.aLL)
               )
            {
                return null;
            }

            re = new RuleError(RuleErrorCodes.OTHER, RuleErrorTypes.ERROR, "error 1");
            return re;
        }

       
        public RuleError Validatefield2(string field2us)
        {
            RuleError re = null;
            if (field2us == null || field2us.Trim().Length < 1)
                return null;

            if(field2us.Trim().ToUpper().Equals(field2.NO) ||
               field2us.Trim().ToUpper().Equals(field2.YES) ||
               field2us.Trim().ToUpper().Equals(field2.maybe)
               )
            {
                return null;
            }

            re = new RuleError(RuleErrorCodes.OTHER, RuleErrorTypes.ERROR, "error 2.");
            return re;
        }
       
}

Re: C# 2010 edit

Richard MacCutchan3-Jun-12 22:09

Richard MacCutchan

3-Jun-12 22:09

dcof wrote:
how you would combine the edits together for these two columns

What exactly do you mean by the expression "combine the edits together"?

speaking as ...

Re: C# 2010 edit

Eddy Vluggen4-Jun-12 3:30

Eddy Vluggen

4-Jun-12 3:30

dcof wrote:
Now I need to combine the edits together since the two columns are related to each other alot.

Wrong. Either they represent the same, in which case you only register one of both facts, or they represent different things. If one is dependent on the other, it would not be editable; it should be a calculated column.

dcof wrote:
can you tell me how you would combine the edits together for these two columns

Simple; ask the person who came up with this idea on how they would edit "two textboxes" simultaneously. Yes, it's possible, but there's a damn good reason why only one control can have the input-focus in Windows.

dcof wrote:
data table is obtained from information loaded into an excel 2003 spreadsheet

The origin of the table isn't relevant to the question.

Bastard Programmer from Hell Suspicious | :suss:

c# DataGridView EditMode and DeleteKey

blissMaster3-Jun-12 15:25

blissMaster

3-Jun-12 15:25

c# winforms

My DataGridView has:

SelectionMode - CellSelect

EditMode - EditOnKeyStroke

It works well for all Keys except fot DeleteKey (when pressed - nothing happend).

I want - if DeleteKey is pressed - selected Cell (or Cells) stay selected, but - empty value (like in Excel).

Must I create a separate KeyDownEvent for DeleteKey only ?

Re: c# DataGridView EditMode and DeleteKey

Abhinav S3-Jun-12 17:16

Abhinav S

3-Jun-12 17:16

The delete key (by default) works for a row and not for a cell.

Create a separate KeyDown / KeyPress capture method to handle the key press for delete key.

convert part of a list to an array

a.fatemeh3-Jun-12 7:18

a.fatemeh

3-Jun-12 7:18

Hi;
I want to convert a list to an array but just part of it,because my array is smaller than the list.

int[] copyselection = (int[])selec.ToArray(typeof(int[]));

I want to limit the array elements for example ,I want to copy just 100 elements of it;

Thank you all in advance

Dave Kreskowiak3-Jun-12 7:30

Dave Kreskowiak

3-Jun-12 7:30

OK, then there are two methods of doing this.

The first uses a smaller memory footprint as you would use a for loop and copy the data you want from each element in the List to the Array.

The larger memory footprint version is a one-line method, but you'll end up converting your entire List to an array, then Array.Copy[^] out the section you want.

A guide to posting questions on CodeProject[^]

Dave Kreskowiak

VJ Reddy3-Jun-12 7:56

3-Jun-12 7:56

Good answer. 5!

Luc Pattyn3-Jun-12 8:59

3-Jun-12 8:59

you're too generous.

Big Grin | :-D

Luc Pattyn [My Articles] Nil Volentibus Arduum

VJ Reddy3-Jun-12 14:05

3-Jun-12 14:05

Thank you

Richard Andrew x643-Jun-12 7:33

Richard Andrew x64

3-Jun-12 7:33

Might I suggest a for loop:

int Limit = selec.Count > 100 ? 100 : selec.Count;

for ( int LoopCount = 0; LoopCount < Limit; LoopCount++ )
     copyselection[LoopCount] = selec[LoopCount];

The difficult we do right away...
...the impossible takes slightly longer.

VJ Reddy3-Jun-12 7:57

3-Jun-12 7:57

Good answer. 5!

Luc Pattyn3-Jun-12 9:00

3-Jun-12 9:00

you're really too generous.

Big Grin | :-D

Luc Pattyn [My Articles] Nil Volentibus Arduum

VJ Reddy3-Jun-12 7:53

3-Jun-12 7:53

I think the Take extension method of IEnumerable can be used for this purpose as shown below:

List<int> data = new List<int>(){1,2,3,4,5,6,7,8,9,10};
int[] array = data.Take(5).ToArray();

The Take method takes specified number of elements or the total elements of the list if the total is less than the specified number.

Richard Andrew x643-Jun-12 8:00

Richard Andrew x64

3-Jun-12 8:00

Best answer! Thumbs Up | :thumbsup:

The difficult we do right away...
...the impossible takes slightly longer.

Luc Pattyn3-Jun-12 9:00

3-Jun-12 9:00

so far, yes.

Laugh | :laugh:

Luc Pattyn [My Articles] Nil Volentibus Arduum

taha bahraminezhad Jooneghani

taha bahraminezhad Jooneghani3-Jun-12 8:05

3-Jun-12 8:05

list items have a index, you can use for for selecting 100 item, or if you looking at some value in items use list.Where(p => p.StartsWith("s")) in a Foreach loop.some thing like this:

List<string> lsi = new List<string>();
            lsi.Add("sara");
            lsi.Add("soo");
            lsi.Add("kabab");
            foreach (var item in lsi.Where(p => p.StartsWith("s")))
            {
                Response.Write(item);
            }

Luc Pattyn3-Jun-12 8:58

3-Jun-12 8:58

With all the upvoted answers so far, you haven't gotten the proper solution yet IMO; I recommend

int[] mySmallArray=myList.GetRange(startIndex, count).ToArray();

which avoids both a big intermediate array and any visible looping, and doesn't require .NET version 3.5+

Smile | :)

Luc Pattyn [My Articles] Nil Volentibus Arduum