Develop Reference

TimeTable creation using graph colouring in ASP.net

I am working on an ASP application which is about creating time table (scheduling of classes) for my final semester project. I have used the logic from a basic console application program of graph colouring and incorporated into my project. Though the logic for a console application works as required, I am unable to do the same for my asp project.
try
{
int n = 10, i, j, max = 0, col, ct = 0, rt = 0, m, count = 2, g = 0;
int[][] a = new int[20][];
int[] c = new int[20];
int[] arr = new int[20];
for (int k = 0; k < 20; k++)
{
c[k] = 0;
arr[k] = 0;
a[k] = new int[20];
for (int l = 0; l < 20; l++)
{
a[k][l] = 0;
}
}
string num = null, num1 = "";
string display = "SELECT * FROM tbl_Subjects WHERE USN IN(SELECT USN FROM tbl_Student WHERE Semester='" + DropDownList1.Text + "')";
con.Open();
SqlCommand cmdSql = new SqlCommand(display, con);
SqlDataReader rs;
rs = cmdSql.ExecuteReader();
while (rs.Read())
{
//count1++;
for (int k = 1; k <= n; k++)
{
g = k - 1;
num = rs[k].ToString();
arr[g] = Convert.ToInt32(num);
num1 += arr[g] + " ";
}
num1 += "\n";
for (int k = 0; k < n; k++)
{
for (int l = (k + 1); l < n; l++)
{
if (arr[k] == 1 && arr[l] == 1)
{
a[k][l] = 1;
//a[l][k] = 1;
}
}
}
}
rs.Close();
TextBox3.Text = num1;
num1 = "";
for (int k = 0; k < n; k++)
{
for (int l = 0; l < n; l++)
{
num1 += a[k][l] + " ";
}
num1 += "\n";
}
for (i = 0; i < n; i++)
{
c[i] = 0;
//for(j=0;j<n;j++)
//scanf("%d",&a[i][j]);
}
c[0] = 1; c[1] = 2;
for (i = 2; i < n; i++)
{
for (j = 0; j < n; j++)
if (a[i][j] > 0)
{
m = 0;
for (col = 0; col < n; col++)
{ if (a[i][col] > 0)rt++; if (a[col][i] > 0)ct++; }
m = rt; if (ct > rt) m = ct;
if (m < 2) { if (a[0][i] > 0)c[i] = 2; else c[i] = 1; } else { c[i] = count; if (m > max) { max = m; count++; } }
rt = 0; ct = 0;
} if (c[i] < 1) if (c[i - 1] > 1) c[i] = 1; else c[i] = 2;
}
string result = "";
for (i = 0; i < n; i++)
{
result += "Subject[" + (i + 1) + "] = " + c[i] + "\n";
if (c[i]==1)
{
TextBox4.Text += "Subject 1 = 8:15 to 9:15 \n";
}
if (c[i] == 2)
{
TextBox4.Text += "Subject 2 = 9:15 to 10:15 \n";
}
if (c[i] == 3)
{
TextBox4.Text += "Subject 3 = 10:45 to 11:45 \n";
}
if (c[i] == 4)
{
TextBox4.Text += "Subject 4 = 11:45 to 12:45 \n";
}
if (c[i] == 5)
{
TextBox4.Text += "Subject 5 = 1:30 to 2:30 \n";
}
if (c[i] == 6)
{
TextBox4.Text += "Subject 6 = 2:30 to 3:30 \n";
}
if (c[i] == 7)
{
TextBox4.Text += "Lab 1 = 8-15 to 10:15 \n";
}
if (c[i] == 8)
{
TextBox4.Text += "Lab 2 = 10:45 to 12:45 \n";
}
if (c[i] == 9)
{
TextBox4.Text += "Lab 3 = 1:30 to 3:30 \n";
}
if (c[i] == 10)
{
TextBox4.Text += "Lab 4 = 8-15 to 9:15 \n";
}
}
con.Close();
TextBox2.Text = result;
}
catch (Exception ex)
{
Label2.Text = ex.Message;
}
In the above code, I'm reading the data i.e 0's and 1's of the adjacency matrix from the database onto which the graph colouring algorithm is applied. Once the colouring has been performed, results are printed on a textbox for time being.
The problem I am facing is, the colors are not being assigned and not able to generate the time table.

After changing tabpage, the combobox crashes

I have a combobox outside my tabcontrol. In each tab control there is a datagridview full of values. In the combobox you can choose a conversion for all values. For example eV→meV.
When i am in the first tab and use the combobox there are no problems, but after i switch the tab and then wanna use the combobox the program list down however the whole combobox is full of try/catch
private void OpenB_Click(object sender, EventArgs e)
{
string[] result = new string[2];
bool lesen = false;
int Spalte = 0;
if (openFileDialog1.ShowDialog() == DialogResult.OK)
{
//Datagridview will be rested, so all values and rows are removed
for (int i = 1; i < Anzahl; i++)
{
DGV[i].Rows.Clear();
}
Anzahl = openFileDialog1.FileNames.Length;
counter = new int[Anzahl];
try
{
if (tabControl1.TabCount < Anzahl)
{
for (int i = 1; i <= Anzahl; i++)
{
if (i > tabControl1.TabCount)
{
string title = "Tab " + (tabControl1.TabCount + 1).ToString();
TabPage myTabPage = new TabPage(title);
tabControl1.TabPages.Add(myTabPage);
DataGridView NewDGV = new DataGridView();
NewDGV.AutoSizeColumnsMode = System.Windows.Forms.DataGridViewAutoSizeColumnsMode.AllCells;
NewDGV.ColumnHeadersHeightSizeMode = System.Windows.Forms.DataGridViewColumnHeadersHeightSizeMode.AutoSize;
NewDGV.Columns.Add("Energy", "Energy");
NewDGV.Columns[0].ReadOnly = true;
NewDGV.Columns.Add("Count Rate", "Count Rate");
NewDGV.Columns[1].ReadOnly = true;
NewDGV.Location = new System.Drawing.Point(3, 3);
NewDGV.Name = "NewDGV" + Convert.ToString(i);
NewDGV.RowHeadersVisible = false;
NewDGV.Size = new System.Drawing.Size(276, 379);
NewDGV.TabIndex = i;
foreach (DataGridViewColumn col in NewDGV.Columns)
col.SortMode = DataGridViewColumnSortMode.NotSortable;
NewDGV.SelectionMode = DataGridViewSelectionMode.ColumnHeaderSelect;
DGV.Add(NewDGV);
tabControl1.TabPages[i - 1].Controls.Add(NewDGV);
}
}
}
else if (tabControl1.TabCount > Anzahl)
{
for (int i = tabControl1.TabCount - 1; i >= Anzahl; i--)
{
tabControl1.TabPages.Remove(tabControl1.TabPages[i]);
}
}
}
catch { }
try
{
//Double arrays and Datagridview will be attuned to the count of data
eV = new double[openFileDialog1.FileNames.Length][];
meV = new double[openFileDialog1.FileNames.Length][];
cm = new double[openFileDialog1.FileNames.Length][];
CR = new double[openFileDialog1.FileNames.Length][];
CRmax = new double[openFileDialog1.FileNames.Length][];
for (int i = 0; i < Anzahl; i++)
{
//Naming the columns after data names
string[] Dateiname = openFileDialog1.FileNames[i].Split('\\');
int L = Dateiname.Length;
tabControl1.TabPages[i].Text = Dateiname[L-1];
}
}
catch
{
}
//Datafiles will be read one by one
DataRead(result, ref lesen, ref Spalte);
}
}
/// Reading loop
///
/// double[] eV2 = Energy values of the current data file in eV
/// double[] meV2 = Energy values of the current data file in meV
/// double[] cm2 = Energy values of the current data file in cm^-1
/// double[] CR2 = Intensities of the current data file in CR
/// double[] CRmax2 = normalizied Intensities of the current data file in 1/CRmax
private void DataRead(string[] result, ref bool lesen, ref int Spalte)
{
for (Spalte = 0; Spalte < Anzahl; Spalte++)
{
string line;
lesen = false;
counter[Spalte] = 0;
try
{
Ursprung = openFileDialog1.FileNames[Spalte];
//initialize stream reader
System.IO.StreamReader file1 = new System.IO.StreamReader(openFileDialog1.FileNames[Spalte]);
//read line per line in stream reader
while (((line = file1.ReadLine()) != null))
{
counter[Spalte]++;
Count2 = counter[Spalte];
Count2 = Count2 / 2;
try
{
string[] splitter = line.Split(' ');
if ((splitter[0] == "S") && (splitter[1] == "0000"))
{
lesen = true;
counter[Spalte] = 0;
}
if (lesen == true)
{
//Rows will be filled an added with data value strings
if (counter[Spalte] % 2 == 0)
{
result[0] = splitter[2];
}
else
{
result[1] = splitter[2];
dataGridView1.Rows.Add();
DGV[Spalte].Rows.Add();
int Zeile = (counter[Spalte] - 1) / 2;
DGV[Spalte][0, Zeile].Value = result[0];
DGV[Spalte][1, Zeile].Value = result[1];
}
}
}
catch
{
continue;
}
}
//Streamreader is closed
file1.Close();
counter[Spalte] = counter[Spalte] / 2;
//Current datagridviw values are saved in arrays
//The conversions will be calculated and saved in new arrays
//So every unit gets its own array
double[] eV2 = new double[counter[Spalte]];
double[] meV2 = new double[counter[Spalte]];
double[] cm2 = new double[counter[Spalte]];
double[] CR2 = new double[counter[Spalte]];
double[] CRmax2 = new double[counter[Spalte]];
//Conversion calculation
for (int i = 0; i < counter[Spalte]; i++)
{
eV2[i] = Convert.ToDouble(DGV[Spalte][0, i].Value);
CR2[i] = Convert.ToDouble(DGV[Spalte][1, i].Value);
meV2[i] = 1000 * eV2[i];
cm2[i] = 8066 * eV2[i];
}
//Current file's arrays are saved in double arrays
eV[Spalte] = eV2;
CR[Spalte] = CR2;
meV[Spalte] = meV2;
cm[Spalte] = cm2;
for (int i = 0; i < counter[Spalte]; i++)
{
CRmax2[i] = CR2[i] / CR2.Max();
}
CRmax[Spalte] = CRmax2;
//Chosen conversion replaces values in datagridview
if (Hilfe == 1)
{
for (int i = 0; i < counter[Spalte]; i++)
{
DGV[Spalte][0, i].Value = meV2[i];
}
}
else if (Hilfe == 2)
{
for (int i = 0; i < counter[Spalte]; i++)
{
DGV[Spalte][0, i].Value = cm2[i];
}
}
if (Hilfe2 == 1)
{
for (int i = 0; i < counter[Spalte]; i++)
{
DGV[Spalte][1, i].Value = CRmax2[i];
}
}
}
catch
{
MessageBox.Show("Es ist ein Fehler beim Einlesen eingetreten");
}
}
}
/// Energy Unit
/// Choses between eV, meV, 1/cm
/// Datagridview values are replaced by the unit array values
/// Hilfe... Saves current energy unit
private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)
{
int L = comboBox1.SelectedIndex;
try
{
if (L == 0)
{
Hilfe = 1;
try
{
for (int Spalte = 0; Spalte < Anzahl; Spalte++)
{
for (int i = 0; i < counter[Spalte]; i++)
{
DGV[Spalte][0, i].Value = meV[Spalte][i];
}
}
}
catch
{
}
}
if (L == 1)
{
Hilfe = 2;
try
{
for (int Spalte = 0; Spalte < Anzahl; Spalte++)
{
for (int i = 0; i < counter[Spalte]; i++)
{
DGV[Spalte][0, i].Value = cm[Spalte][i];
}
}
}
catch
{
}
}
if (L == 2)
{
Hilfe = 0;
try
{
for (int Spalte = 0; Spalte < Anzahl; Spalte++)
{
for (int i = 0; i < counter[Spalte]; i++)
{
DGV[Spalte][0, i].Value = eV[Spalte][i];
}
}
}
catch
{
}
}
}
catch { }
}

Accept these answer if you dont know how to post your own answer?.
Answer:
Problem fixed. The reason was the dgv.autosizemode , when i deactivate it before the conversions it runs.
for (int Spalte = 0; Spalte < Anzahl; Spalte++)
{
DGV[Spalte].AutoSizeColumnsMode = DataGridViewAutoSizeColumnsMode.None;
for (int i = 0; i < counter[Spalte]; i++)
{
DGV[Spalte][0, i].Value = meV[Spalte][i];
}
DGV[Spalte].AutoSizeColumnsMode = DataGridViewAutoSizeColumnsMode.DisplayedCells;
}

Writing to text file doesn't match

i have a 10x10 text box ( 100 of them )
I write this code to write into text file :
foreach (Control control in Panel1.Controls)
{
var textBox = control as TextBox;
if (textBox != null)
{
if (string.IsNullOrEmpty(textBox.Text)) // ignore this
{
textBox.Style["visibility"] = "hidden";
}
textBox.Enabled = false;
if (numberofCommas > 8)
{
stringWriter.Write(textBox.Text);
numberofCommas = 0;
}
else
{
stringWriter.Write("," + textBox.Text );
numberofCommas++;
recordsWritten++;
}
if (recordsWritten == 10)
{
stringWriter.WriteLine();
recordsWritten = 0;
}
else
{
}
From the above i want to have 10 rows of 9 commas in the text file but instead i have 9 rows of 10 commas in the text file , is my code logic wrong? because i have been looking it for hours , i still couldn't solve it . sorry if my logic is bad , i am new to programming.

I think that you should increment recordsWritten in the last step:
if (numberofCommas > 8)
{
stringWriter.Write(textBox.Text);
numberofCommas = 0;
recordsWritten++;
}
Here is a better way to do it using Linq:
var textBoxes = Panel1.Controls.OfType<TextBox>().Select((t, i) => new { TextBox = t, Index = i }).ToList();
foreach (var tb in textBoxes)
{
if (string.IsNullOrEmpty(tb.TextBox.Text))
tb.TextBox.Style["visibility"] = "hidden";
tb.TextBox.Enabled = false;
}
foreach (var line in textBoxes.GroupBy(e => e.Index / 10)
.Select(e =>
string.Join(", ",
e.Select(a => a.TextBox.Text).ToArray())))
stringWriter.WriteLine(line);

I wouldn't recommend you to use 100 TextBox objects, you can use a DataGridView binded to a DataTable with 10 rows and 10 columns. You can still edit your data and save it to a file.
Try the below code
StringWriter stringWriter1 = new StringWriter();
DataTable dataTable1 = new DataTable();
private void Form1_Shown(object sender, EventArgs e)
{
dataGridView1.AllowUserToAddRows = false;
int i;
for (i = 0; i < 10; i++)
{
dataTable1.Columns.Add("Column" + (i + 1), typeof(string));
}
for (i = 0; i < 10; i++)
{
DataRow dataRow1 = dataTable1.NewRow();
dataTable1.Rows.Add(dataRow1);
}
dataGridView1.DataSource = dataTable1;
}
private void button1_Click(object sender, EventArgs e)
{
string rowString = "";
int i,j;
for (i = 0; i < 10; i++)
{
rowString = "";
for (j = 0; j < 10; j++)
{
if (dataTable1.Rows[i][j].ToString().Contains(",") == true)
{
//Enclosing the field data inside quotes so that it can
//be identified as a single entity.
rowString += "\"" + dataTable1.Rows[i][j] + "\"" + ",";
}
else
{
rowString += dataTable1.Rows[i][j] + ",";
}
}
rowString = rowString.Substring(0, rowString.Length - 1);
stringWriter1.WriteLine(rowString);
}
}
you just need to add a DataGridView onto your Form.

not find any control in cell

private void btnSaveStudy_Click(object sender, EventArgs e)
{
string valueFromlbl = string.Empty;
for(int i = 0; i < tableContent.Rows.Count; i++)
{
for(int j = 0; j < tableContent.Rows[i].Cells.Count; j++)
{
foreach(Control ctrl in tableContent.Rows[i].Cells[j].Controls)
{
Label lbl = ctrl as Label;
if(lbl != null)
{
valueFromlbl = lbl.Text;
}
}
}
}
}
protected void Page_Load(object sender, EventArgs e)
{
HtmlTable table = null;
HtmlTableRow row = null;
HtmlTableCell cell = null;
studyNumber = studyNumber + 1;
uniqueID = uniqueID + 1;
for(int i = 0; i < 5; i++)
{
table = new HtmlTable();
row = new HtmlTableRow();
tableContent.Controls.AddAt(i, row);
for(int j = 0; j < 3; j++)
{
cell = new HtmlTableCell();
cell.Attributes.Add("Class", "csstablelisttd");
row.Attributes.Add("Class", "csstextheader");
row.Controls.AddAt(j, cell);
if(i == 0 && j == 0)
{
cell.InnerText = "Study : " + Convert.ToInt32(studyNumber);
}
else if(i == 1 && j == 0)
{
cell.InnerText = "Modality" + " : " + modality;
}
else if(i == 2 && j == 0)
{
cell.InnerText = "Start Date" + " : " + DateTime.Now.ToString("dd-MMM-yyyy");
}
else if(i == 3 && j == 0)
{
cell.InnerText = "Accession Number" + " : " + accessionNumber;
}
else if(i == 4 && j == 0)
{
Button btnSaveStudy = new Button();
btnSaveStudy.ID = "btnSaveStudy" + uniqueID;
btnSaveStudy.Text = "Save";
btnSaveStudy.Attributes.Add("Class", "cssbutton");
cell.Controls.Add(btnSaveStudy);
btnSaveStudy.Click += new EventHandler(btnSaveStudy_Click);
}
if(i == 1 && j == 1)
{
cell.InnerText = "AE Title" + " : " + schedule_Station_AE_Title;
}
else if(i == 1 && j == 2)
{
cell.InnerText = "Station Name" + " : " + schedule_Station_Name;
}
else if(i == 2 && j == 1)
{
cell.InnerText = "Start time" + " : " + startTime;
}
else if(i == 3 && j == 1)
{
cell.InnerText = "End time" + " : " + endTime;
}
else if(i == 2 && j == 2)
{
Label lblPriority = new Label();
lblPriority.ID = "lblPriority" + uniqueID;
lblPriority.Text = "Priority : ";
DropDownList ddlPriority = new DropDownList();
ddlPriority.ID = "ddlPriority" + uniqueID;
ddlPriority.Attributes.Add("Class", "csstextbox");
ddlPriority.Items.Add(new ListItem("MEDIUM", "4"));
ddlPriority.Items.Add(new ListItem("STAT", "1"));
ddlPriority.Items.Add(new ListItem("HIGH", "2"));
ddlPriority.Items.Add(new ListItem("ROUTINE", "3"));
ddlPriority.Items.Add(new ListItem("LOW", "5"));
cell.Controls.Add(lblPriority);
cell.Controls.Add(ddlPriority);
}
else if(i == 3 && j == 2)
{
Label lblStudy = new Label();
lblStudy.ID = "lblStudy" + uniqueID;
lblStudy.Text = "Study : ";
DropDownList ddlStudyList = new DropDownList();
ddlStudyList = BindStudy(ddlStudyList, Convert.ToInt32(acqModalityID), uniqueID);
ddlStudyList.Attributes.Add("Class", "csstextbox");
cell.Controls.Add(lblStudy);
cell.Controls.Add(ddlStudyList);
}
}
}
}}
I have added controls to table cell but not find any control

This appears to be an issue with the execution order. Remember that your controls are not added until after your click event. So when your button click fires, the controls need to have been re-added before you can check for their existence.
(I would post this as a comment, but evidently, as I am new, I don't have enough points)

pass in the Page as the root and see if the control you are looking for comes back
private Control FindControlRecursive(Control rootControl, string controlID)
{
if (rootControl.ID == controlID) return rootControl;
foreach (Control controlToSearch in rootControl.Controls)
{
Control controlToReturn =
FindControlRecursive(controlToSearch, controlID);
if (controlToReturn != null) return controlToReturn;
}
return null;
}

You have simply forgotten to add the table itself to the page's control-collection.
Page.Controls.Add(table);
(it would be better to add it to a container control like PlaceHolder or Panel instead)

C# How to exclude an int from an array?

So I've got an array of integer. I want to use a loop and exclude integers that makes the equation true. So that would be like
for (int n = 0; n < first9char.Length; n++ ) {
if (first9char[n] == clickValue) {
first9char[n] = first9char[n + 1];
But then it only changes the value that is equal to not changing whole array. So is there any way to do this?
I want to use it in this loop.
if (UserSquareMethod.clickedBoxes[0] == -1) {
MessageBox.Show("You have not selected any box");
} else {
int i = 0;
do {
if (textButtonArray[clickedBox[i]].Text == "" || clickValue == "") {
textButtonArray[clickedBox[i]].Text = clickValue;
textButtonArray[clickedBox[i]].Font = new Font(textButtonArray[clickedBox[i]].Font.FontFamily, 14, FontStyle.Bold);
}
else
{
textButtonArray[clickedBox[i]].Text += "," + clickValue;
textButtonArray[clickedBox[i]].Font = new Font(textButtonArray[clickedBox[i]].Font.FontFamily, 5, FontStyle.Regular);
string[] first9char = textButtonArray[clickedBox[i]].Text.Split(new string[] { "," }, StringSplitOptions.None);
for (int j = 1; j < first9char.Length; j++)
{
for (int k = j - 1; k >= 0; k--)
{
if (first9char[j] == first9char[k])
{
if (clearNumberClicked == true)
{
first9char = Array.FindAll(first9char, x => x != clickValue);
label2.Text = first9char[0];
//int n = 0;
//for (int p = 0; p < first9char.Length; p++)
//{
// if (first9char[p] != clickValue)
// {
// first9char[n] = first9char[p];
// n++;
// label2.Text += "," + first9char[n];
// }
// }
//for (int n = 0; n < first9char.Length; n++ ) {
//if (first9char[n] == clickValue) {
// first9char[n] = first9char[n + 1];
// for ( int p = 0; p < n; p++) {
//}
//}
//}
MessageBox.Show("Clear the number" + first9char[(first9char.Length - 1)] + "and " + clickValue + " " + first9char.Length);
}
else {
first9char[j] = "";
textButtonArray[clickedBox[i]].Text = first9char[0];
MessageBox.Show("You cannot enter the same number again!"+ first9char[j]+j);
for (int m = 1; m < (first9char.Length - 1); m++) {
textButtonArray[clickedBox[i]].Text += ","+ first9char[m];
}
}
}
}
}
if (textButtonArray[clickedBox[i]].Text.Length > 9)
{
textButtonArray[clickedBox[i]].Text = first9char[0] + "," + first9char[1] + "," + first9char[2] + "," + first9char[3] + "," + first9char[4];
MessageBox.Show("You cannot enter more than 5 numbers, please clear the box if you want to enter different number." + textButtonArray[clickedBox[i]].Text.Length);
}
}
i++;
}
while (clickedBox[i] != -1);
}
}

I would use LINQ for this:
first9char = first9char.Where(x => x != clickValue).ToArray();
It just means "pick the items that don't match". If you can't use LINQ for some reason, then just keep another counter, and make sure to only loop to n from there on in:
int n = 0;
for(int i = 0; i < first9char.Length; i++) {
if(first9char[i] != clickValue) {
first9char[n] = first9char[i];
n++;
}
}
Clean and efficient.