private void buttonClear_Click(object sender, EventArgs e)
{
graph = null;
createGraph = null;
dgwMatrix.Rows.Clear();
dgwMatrix.Columns.Clear();
dgwMatrix.Visible = false;
pictureBox1.Controls.Clear();
pictureBox1.Refresh();
dgwOutput.Rows.Clear();
dgwOutput.Visible = false;
listOutput.Items.Clear();
}
private void drawGraph_Click(object sender, EventArgs e)
{
AboutProgram.Hide();
paintPanel.Show();
buttonClear.Show();
dgwMatrix.Visible = true;
pictureBox1.MouseDoubleClick += new System.Windows.Forms.MouseEventHandler(this.pictureBox1_MouseDoubleClick);
pictureBox1.MouseClick += new System.Windows.Forms.MouseEventHandler(this.pictureBox1_MouseClick);
dgwMatrix.Visible = true;
createGraph = new CreateGraph(ref this.dgwMatrix);
dgwMatrix.CellValueChanged += new DataGridViewCellEventHandler(this.matrix_CellValueChanged);
saveGraph.Visible = true;
saveGraph.MouseClick += new System.Windows.Forms.MouseEventHandler(this.buttonSave_Click);
}