How to export GridView to Excel, render cells, add WordArt, and fill a custom template

namespace GridviewToExcel
{
    partial class Form1
    {
        /// <summary>
        /// Required designer variable.
        /// </summary>
        private System.ComponentModel.IContainer components = null;

        /// <summary>
        /// Clean up any resources being used.
        /// </summary>
        /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
        protected override void Dispose(bool disposing)
        {
            if (disposing && (components != null))
            {
                components.Dispose();
            }
            base.Dispose(disposing);
        }

        #region Windows Form Designer generated code

        /// <summary>
        /// Required method for Designer support - do not modify
        /// the contents of this method with the code editor.
        /// </summary>
        private void InitializeComponent()
        {
            this.dg1 = new System.Windows.Forms.DataGridView();
            this.progressBar1 = new System.Windows.Forms.ProgressBar();
            this.btn2Excel = new System.Windows.Forms.Button();
            this.btnUseTemplate = new System.Windows.Forms.Button();
            this.label1 = new System.Windows.Forms.Label();
            this.saveFileDialog1 = new System.Windows.Forms.SaveFileDialog();
            ((System.ComponentModel.ISupportInitialize)(this.dg1)).BeginInit();
            this.SuspendLayout();
            // 
            // dg1
            // 
            this.dg1.AllowUserToAddRows = false;
            this.dg1.AllowUserToDeleteRows = false;
            this.dg1.ColumnHeadersHeightSizeMode = System.Windows.Forms.DataGridViewColumnHeadersHeightSizeMode.AutoSize;
            this.dg1.Location = new System.Drawing.Point(11, 10);
            this.dg1.Name = "dg1";
            this.dg1.ReadOnly = true;
            this.dg1.RowTemplate.Height = 15;
            this.dg1.Size = new System.Drawing.Size(713, 260);
            this.dg1.TabIndex = 0;
            // 
            // progressBar1
            // 
            this.progressBar1.Location = new System.Drawing.Point(10, 325);
            this.progressBar1.Name = "progressBar1";
            this.progressBar1.Size = new System.Drawing.Size(714, 21);
            this.progressBar1.TabIndex = 1;
            // 
            // btn2Excel
            // 
            this.btn2Excel.BackColor = System.Drawing.Color.WhiteSmoke;
            this.btn2Excel.FlatStyle = System.Windows.Forms.FlatStyle.Flat;
            this.btn2Excel.Location = new System.Drawing.Point(10, 361);
            this.btn2Excel.Name = "btn2Excel";
            this.btn2Excel.Size = new System.Drawing.Size(237, 35);
            this.btn2Excel.TabIndex = 2;
            this.btn2Excel.Text = "Export to Excel";
            this.btn2Excel.UseVisualStyleBackColor = false;
            this.btn2Excel.Click += new System.EventHandler(this.btn2Excel_Click);
            // 
            // btnUseTemplate
            // 
            this.btnUseTemplate.BackColor = System.Drawing.Color.WhiteSmoke;
            this.btnUseTemplate.FlatStyle = System.Windows.Forms.FlatStyle.Flat;
            this.btnUseTemplate.Location = new System.Drawing.Point(284, 361);
            this.btnUseTemplate.Name = "btnUseTemplate";
            this.btnUseTemplate.Size = new System.Drawing.Size(237, 35);
            this.btnUseTemplate.TabIndex = 3;
            this.btnUseTemplate.Text = "Use Excel template file";
            this.btnUseTemplate.UseVisualStyleBackColor = false;
            this.btnUseTemplate.Click += new System.EventHandler(this.btnUseTemplate_Click);
            // 
            // label1
            // 
            this.label1.AutoSize = true;
            this.label1.Font = new System.Drawing.Font("Microsoft Sans Serif", 8.25F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
            this.label1.Location = new System.Drawing.Point(11, 308);
            this.label1.Name = "label1";
            this.label1.Size = new System.Drawing.Size(56, 13);
            this.label1.TabIndex = 4;
            this.label1.Text = "Progress";
            // 
            // Form1
            // 
            this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
            this.ClientSize = new System.Drawing.Size(732, 449);
            this.Controls.Add(this.label1);
            this.Controls.Add(this.btnUseTemplate);
            this.Controls.Add(this.btn2Excel);
            this.Controls.Add(this.progressBar1);
            this.Controls.Add(this.dg1);
            this.Name = "Form1";
            this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
            this.Text = "Form1";
            this.Load += new System.EventHandler(this.Form1_Load);
            ((System.ComponentModel.ISupportInitialize)(this.dg1)).EndInit();
            this.ResumeLayout(false);
            this.PerformLayout();

        }

        #endregion

        private System.Windows.Forms.DataGridView dg1;
        private System.Windows.Forms.ProgressBar progressBar1;
        private System.Windows.Forms.Button btn2Excel;
        private System.Windows.Forms.Button btnUseTemplate;
        private System.Windows.Forms.Label label1;
        private System.Windows.Forms.SaveFileDialog saveFileDialog1;
    }
}