3, C# - rextester

Language: Layout:

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.Diagnostics;

using System.Data.SqlClient;

namespace SQLBackUpApp

{

public partial class Form1 : Form

{

SqlConnection con;

SqlCommand cmd;

SqlDataReader dr;

public Form1()

{

InitializeComponent();

}

private void Form1_Load(object sender, EventArgs e)

{

label3.Visible = false;

serverName(".");

}

public void serverName(string str)

{

con = new SqlConnection("Data Source=" + str + ";Database=Master;data source=.; uid=sa; pwd=Micr0s0ft;");

con.Open();

cmd = new SqlCommand("select *  from sysservers  where srvproduct='SQL Server'", con);

dr = cmd.ExecuteReader();

while (dr.Read())

{

ComboBoxserverName.Items.Add(dr[2]);

}

dr.Close();

}

public void Createconnection()

{

con = new SqlConnection("Data Source=" + (ComboBoxserverName.Text) + ";Database=Master;data source=.; uid=sa; pwd=Micr0s0ft;");

con.Open();

ComboBoxDatabaseName.Items.Clear();

cmd = new SqlCommand("select * from sysdatabases", con);

dr = cmd.ExecuteReader();

while(dr.Read())

{

ComboBoxDatabaseName.Items.Add(dr[0]);

}

dr.Close();

}

public void query(string que)

{

// ERROR: Not supported in C#: OnErrorStatement

cmd = new SqlCommand(que, con);

cmd.ExecuteNonQuery();

}

public void blank(string str)

{

if (string.IsNullOrEmpty(ComboBoxserverName.Text) | string.IsNullOrEmpty(ComboBoxDatabaseName.Text))

{

// label3.Visible = true;

MessageBox .Show( "Server Name & Database can not be Blank");

return;

}

else

{

if (str == "backup")

{

SaveFileDialog1.FileName = ComboBoxDatabaseName.Text;

SaveFileDialog1.ShowDialog();

string s = null;

s = SaveFileDialog1.FileName;

query("Backup database " + ComboBoxDatabaseName.Text + " to disk='" + s + "'");

label3.Visible = true;

label3.Text = "Database BackUp has been created successful";

}

private void cmbbackup_Click(object sender, EventArgs e)

{

blank("backup");

}

private void cmbserver_SelectedIndexChanged(object sender, EventArgs e)

{

Createconnection();

}

Show compiler warnings [ + ] Show input
Compilation time: 0,14 s