Csharp/C Sharp/Database ADO.net/Data Bind TextBox
Содержание
Bind Database table column to TextBox
<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;
public class Form1 : System.Windows.Forms.Form { private System.Windows.Forms.TextBox textBox1; private System.Windows.Forms.TextBox textBox2; private System.ruponentModel.Container components = null; public Form1() { InitializeComponent(); } private void InitializeComponent(){ this.textBox1 = new System.Windows.Forms.TextBox(); this.textBox2 = new System.Windows.Forms.TextBox(); this.SuspendLayout(); this.textBox1.Location = new System.Drawing.Point(8, 8); this.textBox1.Name = "textBox1"; this.textBox1.Size = new System.Drawing.Size(192, 20); this.textBox1.TabIndex = 0; this.textBox1.Text = "textBox1"; this.textBox2.Location = new System.Drawing.Point(8, 40); this.textBox2.Name = "textBox2"; this.textBox2.Size = new System.Drawing.Size(184, 20); this.textBox2.TabIndex = 1; this.textBox2.Text = "textBox2"; this.AutoScaleBaseSize = new System.Drawing.Size(5, 13); this.ClientSize = new System.Drawing.Size(208, 76); this.Controls.Add(this.textBox2); this.Controls.Add(this.textBox1); this.Name = "Form1"; this.Text = "Form1"; this.Load += new System.EventHandler(this.Form1_Load); this.ResumeLayout(false); } static void Main() { Application.Run(new Form1()); } private void Form1_Load(object sender, System.EventArgs e) { string connString = "server=(local)\\SQLEXPRESS;database=MyDatabase;Integrated Security=SSPI"; string sql = @"select * from employee "; SqlConnection conn = new SqlConnection(connString); SqlDataAdapter da = new SqlDataAdapter(sql, conn); DataSet ds = new DataSet(); da.Fill(ds, "employee"); // Bind to FirstName column of the Employees table textBox1.DataBindings.Add("text", ds, "employee.firstname"); // Bind to LastName column of the Employees table textBox2.DataBindings.Add("text", ds, "employee.lastname"); } }
</source>
Bind DataSet to TextBox
<source lang="csharp"> using System; using System.Collections.Generic; using System.ruponentModel; using System.Data; using System.Drawing; using System.Text; using System.Windows.Forms; using System.Configuration; using System.Data.SqlClient; public class Form1 : Form {
public Form1() { InitializeComponent(); DataSet ds = CreateDataSet(); textBox1.DataBindings.Add("Text", ds.Tables["Products"], "ProductName"); } private DataSet CreateDataSet() { string customers = "SELECT * FROM Products"; DataSet ds = new DataSet(); using (SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["northwind"].ConnectionString)) { SqlDataAdapter da = new SqlDataAdapter(customers, con); da.Fill(ds, "Products"); } return ds; } private void InitializeComponent() { this.textBox1 = new System.Windows.Forms.TextBox(); this.SuspendLayout(); // // textBox1 // this.textBox1.Anchor = ((System.Windows.Forms.AnchorStyles)(((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Left) | System.Windows.Forms.AnchorStyles.Right))); this.textBox1.Location = new System.Drawing.Point(12, 12); this.textBox1.Name = "textBox1"; this.textBox1.Size = new System.Drawing.Size(370, 20); this.textBox1.TabIndex = 0; // // Form1 // this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F); this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font; this.ClientSize = new System.Drawing.Size(394, 44); this.Controls.Add(this.textBox1); this.Name = "Form1"; this.Text = "SimpleDataBinding"; this.ResumeLayout(false); this.PerformLayout(); }
private System.Windows.Forms.TextBox textBox1; [STAThread] static void Main() { Application.EnableVisualStyles(); Application.SetCompatibleTextRenderingDefault(false); Application.Run(new Form1()); }
}
</source>
Bind String array to a TextBox
<source lang="csharp"> using System; using System.Drawing; using System.Collections; using System.ruponentModel; using System.Windows.Forms; using System.Data;
public class Form1 : System.Windows.Forms.Form { private System.Windows.Forms.TextBox textBox1; private System.ruponentModel.Container components = null; public Form1() { InitializeComponent(); } private void InitializeComponent(){ this.textBox1 = new System.Windows.Forms.TextBox(); this.SuspendLayout(); this.textBox1.Location = new System.Drawing.Point(16, 8); this.textBox1.Name = "textBox1"; this.textBox1.Size = new System.Drawing.Size(144, 20); this.textBox1.TabIndex = 0; this.textBox1.Text = "textBox1"; this.AutoScaleBaseSize = new System.Drawing.Size(5, 13); this.ClientSize = new System.Drawing.Size(176, 36); this.Controls.Add(this.textBox1); this.Name = "Form1"; this.Text = "Form1"; this.Load += new System.EventHandler(this.Form1_Load); this.ResumeLayout(false); } static void Main() { Application.Run(new Form1()); } private void Form1_Load(object sender, System.EventArgs e) { String[] names = new String[] {"A", "B", "C", "D", "E"}; textBox1.DataBindings.Add("text", names, null); } }
</source>
DataView Binding to TextBox
<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;
public class Form1 : System.Windows.Forms.Form { private System.Windows.Forms.TextBox textBox1; private System.Windows.Forms.TextBox textBox2; private System.Data.DataSet dataSet1; private System.ruponentModel.Container components = null; public Form1() { InitializeComponent(); } private void InitializeComponent() { this.textBox1 = new System.Windows.Forms.TextBox(); this.textBox2 = new System.Windows.Forms.TextBox(); this.dataSet1 = new System.Data.DataSet(); ((System.ruponentModel.ISupportInitialize)(this.dataSet1)).BeginInit(); this.SuspendLayout(); this.textBox1.Location = new System.Drawing.Point(16, 0); this.textBox1.Name = "textBox1"; this.textBox1.TabIndex = 0; this.textBox1.Text = "textBox1"; this.textBox2.Location = new System.Drawing.Point(16, 24); this.textBox2.Name = "textBox2"; this.textBox2.TabIndex = 1; this.textBox2.Text = "textBox2"; this.dataSet1.DataSetName = "NewDataSet"; this.dataSet1.Locale = new System.Globalization.CultureInfo("en-GB"); this.AutoScaleBaseSize = new System.Drawing.Size(5, 13); this.ClientSize = new System.Drawing.Size(128, 45); this.Controls.AddRange(new System.Windows.Forms.Control[] {this.textBox2,this.textBox1}); this.Name = "Form1"; this.Text = "Form1"; this.Load += new System.EventHandler(this.Form1_Load); ((System.ruponentModel.ISupportInitialize)(this.dataSet1)).EndInit(); this.ResumeLayout(false); } static void Main() { Application.Run(new Form1()); } private void Form1_Load(object sender, System.EventArgs e) { string connString = "server=(local)\\SQLEXPRESS;database=MyDatabase;Integrated Security=SSPI"; string SQL = @"select * from employee"; SqlConnection Conn = new SqlConnection(connString); SqlDataAdapter da = new SqlDataAdapter(SQL, Conn); da.Fill(dataSet1, "Employee"); DataTable myTable = dataSet1.Tables["Employee"]; DataView dv = new DataView(myTable, "FirstName="Z"","FirstName", DataViewRowState.CurrentRows); textBox1.DataBindings.Add("Text", dv, "FirstName"); textBox2.DataBindings.Add("Text", dv, "LastName"); } }
</source>
Simple DataBinding to TextBox
<source lang="csharp">
using System; using System.Collections.Generic; using System.ruponentModel; using System.Configuration; using System.Data; using System.Data.SqlClient; using System.Drawing; using System.Windows.Forms; class Form1 : Form {
public Form1() { InitializeComponent(); DataSet ds = CreateDataSet(); textBox.DataBindings.Add("Text", ds.Tables["Products"], "ProductName"); } private DataSet CreateDataSet() { string customers = "SELECT * FROM Products"; DataSet ds = new DataSet(); using (SqlConnection con = new SqlConnection(ConfigurationSettings.ConnectionStrings["northwind"].ConnectionString)) { SqlDataAdapter da = new SqlDataAdapter(customers, con); da.Fill(ds, "Products"); } return ds; } private void InitializeComponent() { this.textBox = new System.Windows.Forms.TextBox(); this.SuspendLayout(); // // textBox // this.textBox.Location = new System.Drawing.Point(13, 13); this.textBox.Name = "textBox"; this.textBox.Size = new System.Drawing.Size(477, 20); this.textBox.TabIndex = 0; // // Form1 this.Controls.Add(this.textBox); this.ResumeLayout(false); this.PerformLayout(); }
private System.Windows.Forms.TextBox textBox; [STAThread] static void Main() { Application.EnableVisualStyles(); Application.EnableRTLMirroring(); Application.Run(new Form1()); }
}
</source>