Develop Reference

Loop through selected rows C# DevExpress

I have a function that sets column values for all rows:
The code that sets this:
//Update the engineers for all rows
Btn_ValidateClick_ItemClick(object sender,ItemClickEventArgs e)
{
UpdateTotalTime(gridView);
}
private void UpdateEngineers(DevExpress.XtraGrid.Views.Base.ColumnView View)
{
//Column name that need to be updated (set)
DevExpress.XtraGrid.Columns.GridColumn col = View.Columns.ColumnByFieldName("Engineers");
try
{
int dataRowCount = View.DataRowCount;
for (int i = 0; i < dataRowCount; i++)
{
GridView detail = (GridView)gridView.GetDetailView(i, 0);
string language = gridView.GetRowCellValue(i, "Language").ToString();
for (int y = 0; y < gridView.GetDetailView(i, 0).RowCount; y++)
{
//Add all values found in a detail column to an arraylist
values.Add(detail.GetRowCellValue(y, "EngineerInitials").ToString());
}
if (values.Count >0 )
object t = //string join ...
View.SetRowCellValue(i, col, t);
}
else
{
object t = "No engineers"
View.SetRowCellValue(i, col, t);
}
}
}
}
}
The problem is that now, I want it only to set it for the rows that are selected.
I tried using the .GetSelectedRows()-function and adding the rows to an ArrayList, but this doesn't allow customability really:
private void UpdateTotalTime(DevExpress.XtraGrid.Views.Base.ColumnView View)
{
ArrayList selectedRows = new ArrayList();
for (int i = 0; i < gridView.SelectedRowsCount; i++)
{
if (gridView.GetSelectedRows()[i] >= 0)
selectedRows.Add(gridView.GetDataRow(gridView.GetSelectedRows()[i]));
}
try
{
int count = View.GetSelectedRows().Count();
for (int i = 0; i < selectedRows.Count; i++)
{
//This gets the first row of the count, not the first selected row
GridView detail = (GridView)gridView.GetDetailView(i,0);
}
}
If I select the 3 bottom rows, the first 3 get updated. Why is this?

You are adding all the selected rows to your selectedRows ArrayList. But after that, you are not using it for anything.
I guess what you want (I've never used devexpress controls) is using those selectedrows RowHandle to pass it to the GetDetailView method. According to the GetSelectedRows documentation, the method returns the int handles of the selected rows, so your code should look like this:
First, you must save the DataRow handles, not the DataRow itself, so you must change in your code this line:
selectedRows.Add(gridView.GetDataRow(gridView.GetSelectedRow‌​s()[i]));
into this:
selectedRows.Add(gridView.GetSelectedRows()[i]);
And then, change your loop into this:
for (int i = 0; i < selectedRows.Count; i++)
{
int rowHandle = (int)selectedRows[i];
GridView detail = (GridView)gridView.GetDetailView(rowHandle,0);
}
In fact, you could do everything in just one loop:
private void UpdateTotalTime(DevExpress.XtraGrid.Views.Base.ColumnView View)
{
for (int i = 0; i < gridView.SelectedRowsCount; i++)
{
int rowHandle = gridView.GetSelectedRows()[i];
GridView detail = (GridView)gridView.GetDetailView(rowHandle,0);
}
}

Populate TextBoxes from a List

I am trying to populate TextBoxes from a list. I have been able to populate ComboBoxes with comboList:
var comboList = new System.Windows.Forms.ComboBox[4];
comboList[0] = cmbSite1Asset;
comboList[1] = cmbSite2Asset;
comboList[2] = cmbSite3Asset;
comboList[3] = cmbSite4Asset;
List<CRCS.CAsset> assets = _rcs.Assets;
foreach (CRCS.CAsset asset in assets)
{
string id = asset.ID;
for (int i = 0; i < 4; ++i)
{
comboList[i].Items.Add(id);
}
}
But when I try and apply the same principle to TextBoxes
var aosList = new System.Windows.Forms.TextBox[8];
aosList[0] = txtAsset1;
aosList[1] = txtAsset2;
aosList[2] = txtAsset3;
aosList[3] = txtAsset4;
aosList[4] = txtAsset5;
aosList[5] = txtAsset6;
aosList[6] = txtAsset7;
aosList[7] = txtAsset8;
foreach (CRCS.CAsset asset in assets)
{
string id = asset.ID;
for (int n = 0; n < 8; ++n)
{
aosList[n].Items.Add(id);
}
}
TextBox does not like Items.Add ( aosList[n]Items.Add(id); )
I am looking fore a reference or guidance resolving this issue. Thanks!

You should use ComboBox for your problem,instead of iterating on each element,You simply use below lines to populate combobox.
comboList.DataSource=assets;
comboList.DisplayMember="ID";
comboList.ValueMember="ID";
However,if you want your values in TextBox,you can use TextBox.AppendText Method, but it will not work like ComboBox as it will contain texts+texts+texts, will not have indexes like ComboBox.
private void AppendTextBoxLine(string myStr)
{
if (textBox1.Text.Length > 0)
{
textBox1.AppendText(Environment.NewLine);
}
textBox1.AppendText(myStr);
}
private void TestMethod()
{
for (int i = 0; i < 2; i++)
{
AppendTextBoxLine("Some text");
}
}

A Combobox is a collection of items, and so has an Items property from which you can add/remove to change it's contents. A Textbox is just a control that displays some text value, so it has a Text property which you can set/get, and which denotes the string that is displayed.
System.Windows.Forms.TextBox[] aosList = new System.Windows.Forms.TextBox[8];
aosList[0] = txtAsset1;
aosList[1] = txtAsset2;
aosList[2] = txtAsset3;
aosList[3] = txtAsset4;
aosList[4] = txtAsset5;
aosList[5] = txtAsset6;
aosList[6] = txtAsset7;
aosList[7] = txtAsset8;
for (int n = 0; n < 8; ++n)
{
aosList[n].Text = assets[n].ID; // make sure you have 8 assets also!
}

int i = 1;
foreach (var asset in assets)
{
this.Controls["txtAsset" + i].Text = asset.ID;
i++;
}

Data sorting ANSI data from an array to a list c#

I have a problem that I really cannot get my head around. I know how to sort data in general but this one is taxing me!
I have a list of values in an array. The values look like this:
[03;02HTransactions
[03;16HPost Transactions
[04:02HDividends
[04;16HPostDividends
[01:01H-----------------------------------------------------
[05:01H-----------------------------------------------------
[02:16HDate: Today
[02:02HTrades
So its essentially ANSI formatting from a terminal screen which i'm trying to re-construct into a list so that I can print it on our test logs so it at least looks vaguely readable.
So this is how it works within the first 6 characters: [XX:YY where XX is the row number and YY is the column number. The H doesn't matter its just formatting.
Here is what I've got so far:
List<string> rows = new List<string>();
for (int i = 0; i <= filteredLines.Count - 1; i++)
{
int rowIndex = Convert.ToInt32(filteredLines[i].Substring(1, 2));
Dictionary<int, string> columns = new Dictionary<int, string>();
foreach (string row in filteredLines)
{
int innerRowIndex = Convert.ToInt32(row.Substring(1, 2));
if (innerRowIndex == rowIndex)
{
int columnIndex = Convert.ToInt32(filteredLines[i].Substring(4, 2));
string value = filteredLines[i].Remove(0, 7);
columns.Add(columnIndex, value);
}
}
string columnConcatenated = "";
for (int j = 0; j <= columns.Count; j ++ )
{
columnConcatenated = columnConcatenated + columns[j];
}
rows.Add(columnConcatenated);
}
What I essentially want to do is to to build up the lines and sort them into a list based on the row number so it looks like:
--------------------------------------------
Trades Date: Today
Transactions Post Transactions
Dividends Post Dividends
--------------------------------------------
my example isn't 100% accurate as its hard to count the exact columns, but you get the idea. They just need to be on the same line in the correct order.
I cant help but feel i'm probably not going about this the best way. So is there an ideal way for me to achieve this?

Okay, I would implement it like so:
Create a simple POCO/class to represent a log entry with the properties row, column and text
Implement the IComparable interface, so these items can be sorted, on row # first and on column # second
Parse every log line and create a simple POCO Entry object for each
Use a simple List<Entry> and sort it afterwards
Use a StringBuilder to build up the final output
Loop over every Entry in the list, checking it's row # and perhaps entering some newlines for our StringBuilder if there are gaps
If we get an Entry with a row number which is the same as a previous one (which you can use a temp variable for), don't output a newline, but append the Entry.text to this line instead, at the column you want

You already have code to parse each line, extracting its row, column, and displayed text. If the lines of text are not sparse, you could represent this as basically a 2D dynamic array of characters that automatically pads itself out with spaces or empty lines, like so:
public class StringBuilderList : IList<string>
{
readonly List<StringBuilder> list = new List<StringBuilder>();
readonly char pad = ' ';
const char DefaultPad = ' ';
public StringBuilderList(char pad)
{
this.pad = pad;
}
public StringBuilderList() : this(DefaultPad) {}
public void SetString(int iLine, int iChar, string text)
{
list.EnsureCount(iLine + 1);
if (list[iLine] == null)
list[iLine] = new StringBuilder(iChar + text.Length);
var sb = list[iLine];
sb.OverwriteAt(iChar, text, pad);
}
#region IList<string> Members
public int IndexOf(string item)
{
for (int i = 0; i < Count; i++)
if (this[i] == item) // this is not memory-efficient.
return i;
return -1;
}
public void Insert(int index, string item)
{
var sb = new StringBuilder(item);
list.Insert(index, sb);
}
public void RemoveAt(int index)
{
list.RemoveAt(index);
}
public string this[int index]
{
get
{
// Hide the nulls from the caller!
var sb = list[index];
if (sb == null)
return string.Empty;
return sb.ToString();
}
set
{
if (string.IsNullOrEmpty(value))
{
if (list[index] != null)
list[index].Length = 0;
}
else if (list[index] == null)
{
list[index] = new StringBuilder(value);
}
else
{
list[index].Length = 0;
list[index].Append(value);
}
}
}
#endregion
#region ICollection<string> Members
public void Add(string item)
{
list.Add(new StringBuilder(item));
}
public void Clear()
{
list.Clear();
}
public bool Contains(string item)
{
return IndexOf(item) >= 0;
}
public void CopyTo(string[] array, int arrayIndex)
{
foreach (var str in this)
array[arrayIndex++] = str;
}
public int Count
{
get { return list.Count; }
}
public bool IsReadOnly
{
get { return false; }
}
public bool Remove(string item)
{
int index = IndexOf(item);
if (index < 0)
return false;
RemoveAt(index);
return true;
}
#endregion
#region IEnumerable<string> Members
public IEnumerator<string> GetEnumerator()
{
foreach (var sb in list)
yield return (sb == null ? string.Empty : sb.ToString());
}
#endregion
#region IEnumerable Members
System.Collections.IEnumerator System.Collections.IEnumerable.GetEnumerator()
{
return GetEnumerator();
}
#endregion
}
SetString is the method you would use, it copies the string into the 2d array of characters, expanding it as required with empty lines and/or space characters.
And helper methods:
public static class ListHelper
{
public static void Resize<T>(this List<T> list, int count)
{
if (list == null || count < 0)
throw new ArgumentException();
int oldCount = list.Count;
if (count > oldCount)
{
list.Capacity = count;
for (int i = oldCount; i < count; i++)
list.Add(default(T));
}
else if (count < oldCount)
{
for (int i = oldCount-1; i >= count; i--)
list.RemoveAt(i);
}
}
public static void EnsureCount<T>(this List<T> list, int count)
{
if (list == null || count < 0)
throw new ArgumentException();
if (count > list.Count)
list.Resize(count);
}
}
public static class StringBuilderHelper
{
public static void OverwriteAt(this StringBuilder sb, int index, string text, char pad)
{
var textLen = text.Length;
if (textLen + index > sb.Length)
{
for (int i = sb.Length, newLen = textLen + index; i < newLen; i++)
{
sb.Append(pad);
}
}
for (int i = 0; i < textLen; i++)
{
sb[index + i] = text[i];
}
}
}

So a few people have some solutions though they seemed a bit over complicated for what I needed. I managed to resolve the issue myself using a pen and paper then trying it in visual studio. Here is what I did:
First I created a list by looking through the original array and I sorted and removed duplicates:
List<int> rowList = new List<int>();
for (int i = 0; i <= filteredLines.Count - 1; i++)
{
int rowIndex = Convert.ToInt32(filteredLines[i].Substring(1, 2));
rowList.Add(rowIndex);
}
rowList = rowList.Distinct().ToList<int>();
rowList.Sort();
Next I created a container for my final list that would hold the values, then I ran my sorting routine which makes use of a SortedList in order to ensure the columns are sorted before I concatenate them:
foreach (int listRow in rowList)
{
SortedList<int, string> columnList = new SortedList<int, string>();
foreach(string row in filteredLines)
{
int rowIndex = Convert.ToInt32(row.Substring(1, 2));
if(rowIndex==listRow)
{
int columnIndex = Convert.ToInt32(row.Substring(4, 2));
string value = row.Remove(0, 7);
if(columnList.ContainsKey(columnIndex))
{
columnList[columnIndex] = columnList[columnIndex] + value;
}
else
{
columnList.Add(columnIndex, value);
}
}
}
string concatenatedColumns = "";
foreach(string col in columnList.Values)
{
concatenatedColumns = concatenatedColumns + col;
}
parsedAndSortedRows.Add(concatenatedColumns);
}
It does the job fine and puts all the columns in order on the correct row as I wanted. Thanks for the help to everyone though it was through the different answers I helped come up with this solution.

Dynamic ObservableCollection in TreeView?

I Have this problem where I can´t load my data into my TreeView but I have to do it manually instead. My static solution looks like this:
public static ObservableCollection<ClassOfDoom> GetAll()
{
ObservableCollection<ClassOfDoom> listToReturn = new ObservableCollection<ClassOfDoom>();
ClassOfDoom treeItem = null;
OUViewModel ouvm = new OUViewModel();
int[] tempOU = ouvm.HierarchyIntOU;
int[] tempP = ouvm.HierarchyIntParent;
treeItem = new ClassOfDoom("Root");
treeItem.cID = tempOU[0];
treeItem.pID = tempP[0];
for (int i = 0; i < ouvm.HierarchyIntParent.Length; i++)
{
if (treeItem.cID == tempP[i])
{
treeItem.ClassOfDooms.Add(new ClassOfDoom(tempOU[i].ToString()));
treeItem.ClassOfDooms.Last().pID = tempP[i];
treeItem.ClassOfDooms.Last().cID = tempOU[i];
for (int i1 = 0; i1 < ouvm.HierarchyIntParent.Length; i1++)
{
if (treeItem.ClassOfDooms.Last().cID == tempP[i1])
{
treeItem.ClassOfDooms.Last().Countries.Add(new ClassOfDoom(tempOU[i1].ToString()));
}
}
}
}
listToReturn.Add(treeItem);
return listToReturn;
}
This works but as you can see it´s only three levels and I wan´t a dynamic amount of levels. If someone wonders my ClassOfDooms list looks like this:
public ObservableCollection<ClassOfDoom> ClassOfDooms
{
get
{
if (classOfDooms == null) classOfDooms = new ObservableCollection<ClassOfDoom>();
return classOfDooms;
}
set { classOfDooms = value; }
}
I want to state again that I have no trouble reading data from my database or anything like that. The TreeView get´s the right information just not all of it.
EDIT: I solved it myself like this:
ClassOfDoom[] asdfDooms = new ClassOfDoom[ouvm.HierarchyIntParent.Length];
for (int i = 0; i < ouvm.HierarchyIntParent.Length; i++)
{
asdfDooms[i] = new ClassOfDoom();
asdfDooms[i].cID = tempOU[i];
asdfDooms[i].pID = tempP[i];
asdfDooms[i].name = tempPersonName + asdfDooms[i].cID.ToString();
}
for (int aint = 0; aint < ouvm.HierarchyIntParent.Length; aint++)
{
for (int i = 0; i < ouvm.HierarchyIntParent.Length; i++)
{
if (asdfDooms[aint].cID == asdfDooms[i].pID)
{
asdfDooms[aint].classOfDooms.Add(asdfDooms[i]);
}
}
}
listToReturn.Add(asdfDooms[0]);

Try implementing the INotifyPropertyChanged interface in conjunction with the HierarchicalDataTemplate control, this should ensure that changes made to the underlying data structure are reflected in the TreeView structure.

Prevent duplicate records when I save the values into the ComboBox - C#

I have been saving into the ComboBox a value out of the selected column in datagridview with below code.
My question is:How can I prevent duplicate records when I save the values into the ComboBox? How can I do that?
Code:
int ColumnIndex = dgUretimListesi.CurrentCell.ColumnIndex;
CmbAra.Text = "";
for (int i = 0; i < dgUretimListesi.Rows.Count; i++)
{
CmbAra.Items.Add(dgUretimListesi.Rows.Cells[ColumnIndex].Value.ToString());
}

Please try this
private void dgvServerList_CellEndEdit(object sender, DataGridViewCellEventArgs e)
{
try
{
if (e.ColumnIndex == 1)
{
string id = dgvServerList[e.ColumnIndex, e.RowIndex].Value.ToString();
int duplicaterow = 0;
for (int row = 0; row < dgvServerList.Rows.Count; row++)
{
if (row != e.RowIndex && id == dgvServerList[e.ColumnIndex, row].Value.ToString())
{
duplicaterow = row + 1;
MessageBox.Show("Duplicate found in the row: " + duplicaterow);
this.dgvServerList[e.ColumnIndex, e.RowIndex].Value = "";
break;
}
}
}
}
catch
{
}
}

you could first transfer your datagridview items to a dictionary (which guarantees uniqueness) and then transfer that dictionary content to the combobox. or you could check for uniqueness yourself using a 'Contains' method on the combobox. you could even tie the dictionary to the combobox as a source for the combobox items.
Dictionary<string,bool> d = new Dictionary<string,bool>();
int ColumnIndex = dgUretimListesi.CurrentCell.ColumnIndex;
CmbAra.Text = "";
for (int i = 0; i < dgUretimListesi.Rows.Count; i++)
{
d[dgUretimListesi.Rows.Cells[ColumnIndex].Value.ToString()] = true;
}
CmbAra.Items.AddRange(d.Keys);

Use a set:
int ColumnIndex = dgUretimListesi.CurrentCell.ColumnIndex;
CmbAra.Text = "";
HashSet<string> set = new HashSet<string>();
for (int i = 0; i < dgUretimListesi.Rows.Count; i++)
{
string s = dgUretimListesi.Rows.Cells[ColumnIndex].Value.ToString();
if(!set.Contains(s)) {
CmbAra.Items.Add(s);
set.Add(s);
}
}

by using the following check and then determine to add or not
if(CmbAra.Items.Contains(dgUretimListesi.Rows.Cells[ColumnIndex].Value.ToString()))

You can use the following code part.
if(!(CmbAra.Items.Contains(dgUretimListesi.Rows.Cells[ColumnIndex].Value.ToString())))
{
CmbAra.Items.Add(dgUretimListesi.Rows.Cells[ColumnIndex].Value.ToString());
}
else
{
MessageBox.Show("Value Already exists , not added");
}