objDoc = Documents.Open(strFilePath + strFileName);

object fileName = @"C:\Test\NewDocument.doc"; 

this.Application.Documents.Open(ref fileName,
    ref missing, ref missing, ref missing, ref missing, ref missing,
    ref missing, ref missing, ref missing, ref missing, ref missing,
    ref missing, ref missing, ref missing, ref missing, ref missing);

objDoc = Documents.Open(ref strFilePath+strFileName,
     ref Type.Missing, ref Type.Missing, ref Type.Missing, ref Type.Missing, ref Type.Missing,
    ref Type.Missing, ref Type.Missing, ref Type.Missing, ref Type.Missing, ref Type.Missing,
    ref Type.Missing, ref Type.Missing, ref Type.Missing, ref Type.Missing, ref Type.Missing);

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.IO;
using Scripting;
using System.Threading;
using Microsoft.Office.Interop.Word;
namespace Mainka_Vorlagen
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {

        }

        private void textBox1_TextChanged(object sender, EventArgs e)
        {

        }

        private void button1_Click(object sender, EventArgs e)
        {
            if (textBox3.Text != "" && textBox3.Text != null && textBox1.Text != "" && textBox1.Text != null && textBox2.Text != "" && textBox2.Text != null)
            {
                System.Threading.Thread newThread;
                newThread = new System.Threading.Thread(Test);
                newThread.Start();
               
            }
            else
                MessageBox.Show("Bitte zuerst alle Felder ausfüllen!");
        }

        private void textBox2_TextChanged(object sender, EventArgs e)
        {

        }


        void Test()
        {
            try
            {
                //Deklaration

                string strFilePath;
                string strPath;
                int intCounter;
                string strFileName;
                string OldServer;
                string NewServer;


                Document objDoc = new Document();
                Template objTemplate ;
                Dialog dlgTemplate;

                //einlesen der Servernamen//Wertzuweisung
                OldServer = textBox1.Text;
                NewServer = textBox2.Text;
                strFilePath = textBox3.Text;

                //Wenn Pfadname am anfang nicht \\ hat diesen einfügen
                if ((strFilePath.Substring((strFilePath.Length - 1)) != "\\"))
                {
                    strFilePath = (strFilePath + "\\");
                }
                //Dateiendung hinzufügen
                strFileName = strFilePath + "*.doc";

                while ((strFileName != ""))
                {
                    object name = strFilePath + strFileName;
                    
                    object no = false;

                    objDoc = Documents.Open(ref name, ref no, ref no, ref no, ref no, ref no, ref no, ref no, ref no, ref no, ref no, ref no, ref no, ref no, ref no, ref no);

                    objTemplate = objDoc.get_AttachedTemplate();
                    dlgTemplate = Dialogs(wdDialogToolsTemplates);
                    strPath = dlgTemplate.Template;
                    if ((strPath.Substring(0, 13).ToLower() == OldServer.ToLower()))
                    {
                        objDoc.AttachedTemplate = (NewServer + strPath.Substring(13));
                    }
                    strFileName = Dir();
                    objDoc.Save();
                    object save = true;
                    objDoc.Close(ref save);
                }
                objDoc = null;
                objTemplate = null;
                dlgTemplate = null;
            }
            catch (Exception ex)
            {
                MessageBox.Show("Fehler:" + ex.Message);

            }


        }

        private void button2_Click(object sender, EventArgs e)
        {
            folderBrowserDialog1.ShowDialog();
           textBox3.Text= folderBrowserDialog1.SelectedPath;
        }

        private void button3_Click(object sender, EventArgs e)
        {
            openFileDialog1.InitialDirectory = textBox1.Text;

            openFileDialog1.ShowDialog();
            if (openFileDialog1.FileName!= "")
           textBox1.Text= openFileDialog1.FileName;
        }

        private void button4_Click(object sender, EventArgs e)
        {
            openFileDialog1.InitialDirectory = textBox2.Text;
            openFileDialog1.ShowDialog();
            if (openFileDialog1.FileName != "")
                textBox2.Text = openFileDialog1.FileName;
        }

        
    }
}

Sub Test()
        Dim strFilePath As String
        Dim strPath As String
        Dim intCounter As Integer
        Dim strFileName As String
        Dim OldServer As String
        Dim NewServer As String
        Dim objDoc As Document
        Dim objTemplate As Template
        Dim dlgTemplate As Dialog

        OldServer = "<\\rsnj01\vol1>"
        NewServer = "<\\rsnyc1p\vol3>"
        strFilePath = InputBox("What is the folder location that you want to use?")
        If Right(strFilePath, 1) <> "\" Then strFilePath = strFilePath & "\"
        strFileName = Dir(strFilePath & "*.doc")
        Do While strFileName <> ""
            objDoc = Documents.Open(strFilePath & strFileName)
            objTemplate = objDoc.AttachedTemplate
            dlgTemplate = Dialogs(wdDialogToolsTemplates)
            strPath = dlgTemplate.Template
            If LCase(Left(strPath, 13)) = LCase(OldServer) Then
                objDoc.AttachedTemplate = NewServer & Mid(strPath, 14)
            End If
            strFileName = Dir()
            objDoc.Save()
            objDoc.Close()
        Loop
        objDoc = Nothing
        objTemplate = Nothing
        dlgTemplate = Nothing

    End Sub

 
    void Test() {
        string strFilePath;
        string strPath;
        int intCounter;
        string strFileName;
        string OldServer;
        string NewServer;
        Document objDoc;
        Template objTemplate;
        Dialog dlgTemplate;
        OldServer = "<\\\\rsnj01\\vol1>";
        NewServer = "<\\\\rsnyc1p\\vol3>";
        strFilePath = InputBox("What is the folder location that you want to use?");
        if ((strFilePath.Substring((strFilePath.Length - 1)) != "\\")) {
            strFilePath = (strFilePath + "\\");
        }
        strFileName = Dir((strFilePath + "*.doc"));
        while ((strFileName != "")) {
            objDoc = Documents.Open((strFilePath + strFileName));
            objTemplate = objDoc.AttachedTemplate;
            dlgTemplate = Dialogs(wdDialogToolsTemplates);
            strPath = dlgTemplate.Template;
            if ((strPath.Substring(0, 13).ToLower() == OldServer.ToLower())) {
                objDoc.AttachedTemplate = (NewServer + strPath.Substring(13));
            }
            strFileName = Dir();
            objDoc.Save();
            objDoc.Close();
        }
        objDoc = null;
        objTemplate = null;
        dlgTemplate = null;
    }

 private String myConnectionString = @"Data Source=.\SQLEXPRESS;AttachDbFilename=C:\...\Database.mdf;Integrated Security=True;Connect Timeout=30;User Instance=True";
SQLStatements SqlStatement = new SQLStatements();
            BindingSource bSource = new BindingSource();
            AdminToolDatabaseDataSet.ComputerDataTable dTable = new AdminToolDatabaseDataSet.ComputerDataTable();
            AdminToolDatabaseDataSetTableAdapters.ComputerTableAdapter ComputerAdapter = new AdminToolDatabaseDataSetTableAdapters.ComputerTableAdapter();


 public Form1()
            {
                InitializeComponent();
                [...]


                SqlConnection myConnection = new SqlConnection(myConnectionString);

               
                ComputerAdapter.Connection = myConnection;
                ComputerAdapter.GetData();                
                ComputerAdapter.Fill(dTable);
               
               
                bSource.DataSource = dTable;
                dataGridView1.DataSource = bSource;
             
            }
 private void dataGridView1_CellValueChanged(object sender, DataGridViewCellEventArgs e)
            {

                ComputerAdapter.Update((AdminToolDatabaseDataSet.ComputerDataTable)bSource.DataSource);

                
            }

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;

using System.Net;
using System.IO;
namespace Imageload
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            pictureBox1.Image = GetImageFromURL("www.test.de/1.jpg");
        }
        private static Image GetImageFromURL(string url)
        {
            HttpWebRequest httpWebRequest = (HttpWebRequest)HttpWebRequest.Create(url);
            HttpWebResponse httpWebReponse = (HttpWebResponse)httpWebRequest.GetResponse();
            Stream stream = httpWebReponse.GetResponseStream();
            return Image.FromStream(stream);
        }

    }
}