UNIT III
• BUILDING WINDOWS APPLICATION• ACCESSING DATA IN ADO.NET
Building Windows Application
Program Flow• Fill Directory & Sub Directory• Create an order list of all selected file used by both
copy and delete button• GetCheckedFile and GetParentString used by the list
file• Explanation for each button• Get the full path of the chosen directory –
Target_AfterSelect• Mark each node below the current one with current
value of checked – source_Aftercheck• Recursively set to clear - SetCheck
TREE VIEW CONTROL
SET THE CHECK BOX CONTROL OF LEFT (SOURCE) TREEVIEW TO TRUE AND OTHER AS FALSE
FILE COMPARE CLASSpublic frmfilecopier( { InitializeComponent(); FillDirectoryTree(tvsource, true); FillDirectoryTree(tvtarget, false); }
public class FileComparer : IComparer<FileInfo> { public int Compare(FileInfo file1, FileInfo file2) { if (file1.Length > file2.Length) { return -1; } if (file1.Length < file2.Length) { return 1; } return 0; } public bool Equals(FileInfo x, FileInfo y) { throw new NotImplementedException(); } public int GetHashCode(FileInfo x) { throw new NotImplementedException(); } }
FILL_DIRECTORY TREEprivate void FillDirectoryTree(TreeView tv, bool isSource) { tv.Nodes.Clear(); string[] strDrives = Environment.GetLogicalDrives(); foreach ( string rootDirectoryName in strDrives ) { try { DirectoryInfo dir = new DirectoryInfo( rootDirectoryName ); dir.GetDirectories(); TreeNode ndRoot = new TreeNode( rootDirectoryName ); tv.Nodes.Add( ndRoot ); if(isSource) { GetSubDirectoryNodes( ndRoot,ndRoot.Text,true,1); } else { GetSubDirectoryNodes( ndRoot,ndRoot.Text,false,1); } } catch { } Application.DoEvents(); } }
SUBDIRECTORYprivate void GetSubDirectoryNodes(TreeNode parentNode, string fullName, bool getFileNames, int level) { DirectoryInfo dir = new DirectoryInfo(fullName); DirectoryInfo[] dirSubs = dir.GetDirectories(); foreach (DirectoryInfo dirSub in dirSubs) { if ((dirSub.Attributes & FileAttributes.Hidden) != 0) { continue; } TreeNode subnode = new TreeNode(dirSub.Name); parentNode.Nodes.Add(subnode); if (level < MaxLevel) { GetSubDirectoryNodes(subnode, dirSub.FullName, getFileNames, level + 1); } } if (getFileNames) { FileInfo[] files = dir.GetFiles(); foreach (FileInfo file in files) { TreeNode filenode = new TreeNode(file.Name); parentNode.Nodes.Add(filenode); } } }
UNIT IV
BUILDING WEB APPLICATION
COPY BUTTON
private void Btncopy_Click(object sender, EventArgs e) { List<FileInfo> filelist = Getfilelist(); foreach (FileInfo file in filelist) { try { lblstatus.Text = "Copying" + txtTargetdir.Text + "\\" + file.Name + "..."; Application.DoEvents(); file.CopyTo(txtTargetdir.Text + "\\" + file.Name, chkoverwrite.Checked); } catch (Exception ex) { MessageBox.Show(ex.Message); } } lblstatus.Text = "Done"; Application.DoEvents(); }
IMPLEMENTIN COPYprivate List<FileInfo> Getfilelist() { List<string> fileNames = new List<string>(); foreach (TreeNode thenode in tvsource.Nodes) { GetCheckedFiles(thenode, fileNames); } List<FileInfo> fileList = new List<FileInfo>(); foreach(string fileName in fileNames) { FileInfo file = new FileInfo(fileName); if(file.Exists) { fileList.Add(file); }
} IComparer<FileInfo> Comparer = (IComparer<FileInfo>) new FileComparer(); fileList.Sort(Comparer); return fileList; }
IMPLEMENTIN COPY 2private void GetCheckedFiles(TreeNode node, List<string> filenames) { if(node.Nodes.Count == 0) { if(node.Checked) { string fullpath = GetParentstring(node); filenames.Add(fullpath); } } else{ foreach (TreeNode n in node.Nodes) { GetCheckedFiles(n,filenames); } } } private string GetParentstring(TreeNode node) { if(node.Parent == null) { return node.Text; } else { return GetParentstring(node.Parent) + node.Text + (node.Nodes.Count == 0 ? "":"\\"); } }
DELETE BUTTONprivate void btndelete_Click(object sender, EventArgs e) { System.Windows.Forms.DialogResult result = MessageBox.Show("Are u quit sure?","Delete
files",MessageBoxButtons.OKCancel,MessageBoxIcon.Exclamation,MessageBoxDefaultButton.Button2); if(result == System.Windows.Forms.DialogResult.OK) { List<FileInfo> filenames = Getfilelist(); foreach(FileInfo file in filenames) { try{ lblstatus.Text = "Deleting" + file.Name + "..."; Application.DoEvents(); file.Delete(); } catch(Exception ex) { MessageBox.Show(ex.Message); } lblstatus.Text = "Done"; Application.DoEvents(); } } }
CLEAR BUTTONprivate void btnclear_Click(object sender, EventArgs e) {
foreach(TreeNode node in tvsource.Nodes) { SetCheck(node,false); } }
CANCEL BUTTON
private void btncancle_Click(object sender,EventArgs e)
{ Application.Exit();
}
TREEVIEW private void tvtarget_AfterSelect(object sender,System.Windows.Forms.TreeViewEventArgs e) { string theFullpath = GetParentstring(e.Node); if(theFullpath.EndsWith("\\")) { theFullpath = theFullpath.Substring(0,theFullpath.Length-1); } txtTargetdir.Text =theFullpath; } private void tvsource_AfterCheck(object sender, System.Windows.Forms.TreeViewEventArgs e) { if (e.Action != TreeViewAction.Unknown) { SetCheck(e.Node, e.Node.Checked); } } private void SetCheck(TreeNode node, bool check) { foreach (TreeNode n in node.Nodes) { n.Checked = check; if (n.Nodes.Count != 0) { SetCheck(n, check); } } }
Cont..private void tvExpand(object sender, TreeViewCancelEventArgs e) { TreeView tv = (TreeView)sender; bool getFiles = tv == tvsource; TreeNode currentnode = e.Node; string fullName = currentnode.FullPath; currentnode.Nodes.Clear(); GetSubDirectoryNodes(currentnode, fullName, getFiles, 1); } private void tvsource_AfterSelect(object sender, TreeViewEventArgs e) { } private void chkoverwrite_CheckedChanged(object sender, EventArgs e) { } } }
ADO.NET APPLICATION
SELECTING THE DATA GRID VIEW
DATA GRID VIEW
SELECTING THE MENU
ADD THE DATA SOURCE
SELECT UR DATABASE
SELECT UR DATABASE
DB IS ADDED
THE CONNECTION IS SAVED
SELECT THE TABEL
THE TABLE IS ADDED
SAVE AND BUILD
THE CODE GENERATED
RUN THE APPLICATION
UNIT IV
BUILDING WEB APPLICATION
OPENING A WEB APPLICATION
SELECT ASP.NET WEB SITES
RENAME FROM DEFAULT TO HELLOWORLD
THE NAME IS CHANGED
NOW TO CHANGE THE CLASS NAME
CONFIRM THE CHANGE
IN THE ASPX CHANGE THE INHERIT ATTRIBUTE
CODE UR PROGRAM
WHILE RUN CONFIRM THIS MESSAGE
THE RESULT