How to Insert Data into MS Sql database in C#

Question

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i have c# String look like this:
String name is finaloutput

C#

"IP,C1,PktUp,PktDown,Upstream,Downstream,C2,C3,C4,C5\r\n192.168.1.56,0,77776,98364,9203233,96637437,0,0,0,0\r\n192.168.1.12,0,80718,105922,11845169,94299988,0,0,0,0"

i want to insert String data to sql database table
this is my column header

IP,C1,PktUp,PktDown,Upstream,Downstream,C2,C3,C4,C5

this is my data row

192.168.1.56,0,77776,98364,9203233,96637437,0,0,0,0
192.168.1.12,0,80718,105922,11845169,94299988,0,0,0,0

my table name is usage
my table column name is

SQL

IP C1 PktUp PktDown Upstream Downstream C2 C3 C4 C5

how to insert data to my table.
i try this code but insert first row only.

C#

private void button1_Click(object sender, EventArgs e)
{
    string finaloutput = "IP,C1,PktUp,PktDown,Upstream,Downstream,C2,C3,C4,C5\r\n192.168.1.56,0,77776,98364,9203233,96637437,0,0,0,0\r\n192.168.1.12,0,80718,105922,11845169,94299988,0,0,0,0";

    string[] fields = finaloutput.Split(',');
    using (SqlConnection con = new SqlConnection(@"Data Source='localhost';Initial Catalog='NetUsage';User ID='sa';Password='tstc123'"))
    {

        con.Open();
        SqlCommand cmd = new SqlCommand("INSERT INTO usage(IP, Upstream, Downstream) VALUES (@IP, @Upstream, @Downstream)", con);
        cmd.Parameters.AddWithValue("@IP", fields[0].ToString());
        cmd.Parameters.AddWithValue("@Upstream", fields[4].ToString());
        cmd.Parameters.AddWithValue("@Downstream", fields[5].ToString());
        cmd.ExecuteNonQuery();
    }
}

look like this

SQL

IP  Upstream  Downstream                                         
--- --------- -----------
IP  Upstream   Downstream

i want to this

SQL

IP            Upstream   Downstream                                         
---           ---------  -----------
192.168.1.56  9203233    96637437 
192.168.1.12  11845169   94299988

Plz help me i am new to c#

Posted 19-Aug-15 3:21am

isuru chanaka

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3 solutions

Solution 1

You need to split the input in two phases. First split over "\r\n" and then on each row split over ",". Modify your code as per below approach.

C#

string[] rows = finaloutput.Split(new string[] { "\r\n" }, StringSplitOptions.None);

foreach(string srow in rows)
{
string[] fields = srow.Split(',');
    using (SqlConnection con = new SqlConnection(@"Data Source='localhost';Initial Catalog='NetUsage';User ID='sa';Password='tstc123'"))
    {
 
        con.Open();
        SqlCommand cmd = new SqlCommand("INSERT INTO usage(IP, Upstream, Downstream) VALUES (@IP, @Upstream, @Downstream)", con);
        cmd.Parameters.AddWithValue("@IP", fields[0].ToString());
        cmd.Parameters.AddWithValue("@Upstream", fields[4].ToString());
        cmd.Parameters.AddWithValue("@Downstream", fields[5].ToString());
        cmd.ExecuteNonQuery();
    }
}

Posted 19-Aug-15 3:44am

_Asif_

Comments

isuru chanaka 20-Aug-15 0:18am

this is okay but insert with column header

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phil.o · Accepted Answer · 2015-08-19T03:49:00

You have to split the lines before splitting each column value.
This way:

C#

string finaloutput = "IP,C1,PktUp,PktDown,Upstream,Downstream,C2,C3,C4,C5\r\n192.168.1.56,0,77776,98364,9203233,96637437,0,0,0,0\r\n192.168.1.12,0,80718,105922,11845169,94299988,0,0,0,0";

string[] lines = finaloutput.Split(new string[] { "\r\n" }, StringSplitOptions.RemoveEmptyEntries);

string line;
string[] fields;

using (SqlConnection con = new SqlConnection(@"Data Source='localhost';Initial Catalog='NetUsage';User ID='sa';Password='tstc123'")) {

   con.Open();

   using (SqlCommand cmd = new SqlCommand("INSERT INTO usage(IP, Upstream, Downstream) VALUES (@IP, @Upstream, @Downstream)", con)) {

      cmd.Parameters.Add("@IP");
      cmd.Parameters.Add("@Upstream");
      cmd.Parameters.Add("@Downstream");

      // We start at index 1 as the first row (index 0) seems to hold column headers
      for (int i = 1; i < lines.Length; i++) {
         line = lines[i];
         fields = line.Split(',');
         cmd.Parameters["@IP"].Value = fields[0];
         cmd.Parameters["@Upstream"].Value = fields[4];
         cmd.Parameters["@Downstream"].Value = fields[5];
         cmd.ExecuteNonQuery();
      }
   }
}

[Edit] Removed unnecessary ToString() invocations [/Edit]

isuru chanaka · Accepted Answer · 2015-08-19T18:36:00

C#

private void button2_Click(object sender, EventArgs e)
{
    string finaloutput = "IP,C1,PktUp,PktDown,Upstream,Downstream,C2,C3,C4,C5\r\n192.168.1.56,0,77776,98364,9203233,96637437,0,0,0,0\r\n192.168.1.12,0,80718,105922,11845169,94299988,0,0,0,0";
    string[] lines = finaloutput.Split(new string[] { "\r\n" }, StringSplitOptions.RemoveEmptyEntries);

    string line;
    string[] fields;

    using (SqlConnection con = new SqlConnection(@"Data Source='localhost';Initial Catalog='NetUsage';User ID='sa';Password='tstc123'"))
    {

        con.Open();

        using (SqlCommand cmd = new SqlCommand("INSERT INTO csv (IP, Upstream, Downstream) VALUES (@IP, @Upstream, @Downstream)", con))
        {

            //cmd.Parameters.Add("@IP");
            //cmd.Parameters.Add("@Upstream");
            //cmd.Parameters.Add("@Downstream");
            cmd.Parameters.Add("@IP", SqlDbType.VarChar);
            cmd.Parameters.Add("@Upstream", SqlDbType.Float);
            cmd.Parameters.Add("@Downstream", SqlDbType.Float);


            // We start at index 1 as the first row (index 0) seems to hold column headers
            for (int i = 1; i < lines.Length; i++)
            {
                line = lines[i];
                fields = line.Split(',');
                cmd.Parameters["@IP"].Value = fields[0];
                cmd.Parameters["@Upstream"].Value = fields[4];
                cmd.Parameters["@Downstream"].Value = fields[5];
                cmd.ExecuteNonQuery();

            }
            MessageBox.Show("Successfull!");
        }
    }
}

How to Insert Data into MS Sql database in C#

3 solutions

Solution 2

Solution 3

Solution 1

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