в 15:31, 26 мая 2010

2010-05-26T15:31:19Z

Admin: 1 версия

2010-05-26T11:42:47Z

1 версия

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==Read image data from database and display that image==

<source lang="csharp">
using System;
using System.Drawing;
using System.Collections;
using System.ruponentModel;
using System.Windows.Forms;
using System.Data;
using System.Data.SqlClient;
using System.IO;

public class Form1 : System.Windows.Forms.Form {
private System.Windows.Forms.Button button1;
private System.Windows.Forms.TextBox textBox1;
private System.Windows.Forms.PictureBox pictureBox1;
private Images images;
private System.ruponentModel.Container components = null;
public Form1() {
InitializeComponent();
images = new Images();
if (images.GetRow()) {
this.textBox1.Text = images.GetFilename();
this.pictureBox1.Image = (Image)images.GetImage();
} else {
this.textBox1.Text = "DONE";
this.pictureBox1.Image = null;
}
}
private void InitializeComponent() {
this.button1 = new System.Windows.Forms.Button();
this.textBox1 = new System.Windows.Forms.TextBox();
this.pictureBox1 = new System.Windows.Forms.PictureBox();
this.SuspendLayout();
this.button1.Location = new System.Drawing.Point(200, 8);
this.button1.Name = "button1";
this.button1.TabIndex = 0;
this.button1.Text = "Next";
this.button1.Click += new System.EventHandler(this.button1_Click);
this.textBox1.Location = new System.Drawing.Point(24, 8);
this.textBox1.Name = "textBox1";
this.textBox1.Size = new System.Drawing.Size(144, 20);
this.textBox1.TabIndex = 1;
this.textBox1.Text = "";
this.pictureBox1.Location = new System.Drawing.Point(8, 48);
this.pictureBox1.Name = "pictureBox1";
this.pictureBox1.Size = new System.Drawing.Size(280, 208);
this.pictureBox1.TabIndex = 2;
this.pictureBox1.TabStop = false;
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.ClientSize = new System.Drawing.Size(292, 272);
this.Controls.Add(this.pictureBox1);
this.Controls.Add(this.textBox1);
this.Controls.Add(this.button1);
this.Name = "Form1";
this.Text = "Display Images";
this.ResumeLayout(false);
}
static void Main() {
Application.Run(new Form1());
}
private void button1_Click(object sender, System.EventArgs e) {
if (images.GetRow()) {
this.textBox1.Text = images.GetFilename();
this.pictureBox1.Image = (Image)images.GetImage();
} else {
this.textBox1.Text = "DONE";
this.pictureBox1.Image = null;
}
}
}

public class Images{
string imageFilename = null;
byte[] imageBytes = null;
SqlConnection imageConnection = null;
SqlCommand imageCommand = null;
SqlDataReader imageReader = null;
public Images() {
imageConnection = new SqlConnection("server=(local)\\SQLEXPRESS;database=MyDatabase;Integrated Security=SSPI");
imageCommand = new SqlCommand(@"select imagefile, imagedata from imagetable", imageConnection);
imageConnection.Open();
imageReader = imageCommand.ExecuteReader();
}
public Bitmap GetImage() {
MemoryStream ms = new MemoryStream(imageBytes);
Bitmap bmap = new Bitmap(ms);
return bmap;
}
public string GetFilename() {
return imageFilename;
}
public bool GetRow() {
if (imageReader.Read()) {
imageFilename = (string) imageReader.GetValue(0);
imageBytes = (byte[]) imageReader.GetValue(1);
return true;
}else {
return false;
}
}
public void EndImages() {
imageReader.Close();
imageConnection.Close();
}
}

</source>

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Csharp/C Sharp/Database ADO.net/Load Image - История изменений

в 15:31, 26 мая 2010

Admin: 1 версия