How to load the DataBase and their table names in C#

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Hi experts.

I am trying to load the database names and their table names in Windows Forms.

I use this code to Get the server names in the System

C#

private void ServerName()
       {
           try
           {

               DataTable dt = SmoApplication.EnumAvailableSqlServers(true);
               if (dt.Rows.Count > 0)
               {
                   foreach (DataRow dr in dt.Rows)
                   {
                       string serverName = dr[0].ToString();
                       if (!serverName.Contains("\\SQLEXPRESS"))
                       {
                           serverName = serverName + "\\SQLEXPRESS";
                       }
                       comboBox1.Items.Add(serverName);
                   }
                   comboBox1.Items.Add(@".\sqlexpress");
               }
           }
           catch (Exception)
           {
               MessageBox.Show("Problem In Fetching Server Information.");
           }

       }

I use to load the Database Names of that particular Server.

C#

private void DBnames()
        {
            server = comboBox1.SelectedItem.ToString();
            database = "master";
            con = new SqlConnection(@"Data Source=" + server + ";Initial Catalog=" + database + ";Integrated Security=True;");
            con.Open();
            da = new SqlDataAdapter("SELECT name FROM sys.databases", con);
            ds = new DataSet();
            da.Fill(ds);
            for (int i = 0; i < ds.Tables[0].Rows.Count; i++)
            {
                comboBox2.Items.Add(ds.Tables[0].Rows[i][0]);
            }
            con.Close();
        }

Now i want load the table names for this Data base

I use this code

C#

private void TBnames()
        {
            con.Open();
            da = new SqlDataAdapter("SELECT * FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_TYPE='BASE TABLE'",con);
            ds = new DataSet();
            da.Fill(ds);
            for (int i = 0; i < ds.Tables[0].Rows.Count; i++)
            {
                comboBox3.Items.Add(ds.Tables[0].Rows[i][0]);
            }



            con.Close();

        }

But it is not working. Please help me to get the tables of the selected DB.

Thanks in advance..

Posted 11-Dec-13 21:08pm

Vijaydhas

Updated 12-Dec-13 0:57am

v2

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♥…ЯҠ…♥ · Answer 1 · 2013-12-11T21:21:00

Hi VijayDhas,

You can check by executing this query in sql server

SQL

if db_id('master') is not null
   --code mine :)
   print 'db exists'
   else
   print 'Not exists'

Will give output as

db exists

If you want to check it from C# then refer this link[^].You will get some idea to check the existence of database from C#.

Hope this helps you a bit.

Regards,
RK

Vijaydhas · Answer 2 · 2013-12-12T01:50:00

C#

private void TBnames()
       {
           con.Open();
           string s = comboBox2.Text;
          // MessageBox.Show(s);
           cmd = new SqlCommand("Use " + s, con);
           cmd.ExecuteNonQuery();
           da = new SqlDataAdapter("SELECT * FROM sys.tables", con);
           ds = new DataSet();
           da.Fill(ds);
           //dataGridView1.DataSource = ds.Tables[0];
           for (int i = 0; i < ds.Tables[0].Rows.Count; i++)
           {
               comboBox3.Items.Add(ds.Tables[0].Rows[i][0]);
           }
           con.Close();

       }

I have change the code in the TBnames() function. Now it shows all the tables.

How to load the DataBase and their table names in C#

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