You also need to declare 20 variables named dtsCampaign_Code1,dtsCampaign_Code2 .....dtsCampaign_Code20 in the Variables window.

System.Windows.Forms.Form frm = new Form();

Label[] lblCampaignCode = new Label[20];

TextBox[] txtCampaignCode = new TextBox[20];

Button btnCampaignCode = new Button();

// Create a variables 'container' to store variables

Variables vars = null;

public void Main()

{

for (int i = 0; i < lblCampaignCode.Length; i++)

{

var lblCampaign_Code = new Label();

lblCampaignCode = lblCampaign_Code;

lblCampaign_Code.Name = "lblCampaign_Code" + (i+1);

lblCampaign_Code.Text = "CampaignCode" + i+1;

lblCampaign_Code.Location = new Point(15, 32 + (i * 28));

lblCampaign_Code.Visible = true;

lblCampaign_Code.Font = new Font(lblCampaign_Code.Font, FontStyle.Bold);

lblCampaign_Code.TextAlign = ContentAlignment.MiddleCenter;

lblCampaign_Code.AutoSize = true;

frm.Controls.Add(lblCampaign_Code);

}

for (int i = 0; i < txtCampaignCode.Length; i++)

{

var txtCampaign_Code = new TextBox();

txtCampaignCode = txtCampaign_Code;

txtCampaign_Code.Name = "txtCampaign_Code" + (i+1);

txtCampaign_Code.Location = new Point(172, 32 + (i * 28));

txtCampaign_Code.Visible = true;

txtCampaign_Code.Font = new Font(txtCampaign_Code.Font, FontStyle.Bold);

//txtCampaign_Code.TextAlign = ContentAlignment.MiddleCenter;

txtCampaign_Code.AutoSize = true;

frm.Controls.Add(txtCampaign_Code);

}

btnCampaignCode.Name = "btnCampaignCode";

btnCampaignCode.Text = "Submit";

btnCampaignCode.Visible = true;

btnCampaignCode.Font = new Font(btnCampaignCode.Font, FontStyle.Bold);

btnCampaignCode.AutoSize = true;

btnCampaignCode.Location = new Point(125, 32 + (23 * 28));

frm.Controls.Add(btnCampaignCode);

btnCampaignCode.Click += new EventHandler(btnCampaignCode_Click);

frm.WindowState = FormWindowState.Maximized;

frm.ShowDialog();

Dts.TaskResult = (int)ScriptResults.Success;

}

void btnCampaignCode_Click(object sender, EventArgs e)

{

foreach (TextBox inputBox in txtCampaignCode)

{

string variable = "dts" + inputBox.Name.Replace("txt", "");

// Lock variables

Dts.VariableDispenser.LockForWrite(variable);

// Add variables from the VariableDispenser to the variables 'container'

Dts.VariableDispenser.GetVariables(ref vars);

// Now you can use the variables

if (inputBox.Name.ToString().Substring(3, (inputBox.Name.ToString().Length) - 3) == variable.ToString().Substring(3, (variable.ToString().Length) - 3))

{

int number;

if( (int.TryParse(inputBox.Text, out number)) == true)

{

vars[variable].Value = Convert.ToInt32(inputBox.Text);

}

// if DTS varibale is of type String

// vars[variable].Value = inputBox.Text.ToString();

}

// Release the locks

vars.Unlock();

frm.Close();

}

}

}