请问在C#中,如何实现当在添加子窗体中添加完数据信息后,让主窗体的DataGrid控件即时刷新数据信息。（其中DataGrid控件与数据库相连，与添

[lgcumt]

请问在C#中,如何实现当在添加子窗体中添加完数据信息后,让主窗体的DataGrid控件即时刷新数据信息。（其中DataGrid控件与数据库相连，与添加窗体邦定同一张数据表）。

[crazysnowwolf]

顶

[Knight94]

你应该在打开子窗体的时候，通过主窗体的datagrid所绑定的数据源，产生一条新的datarow，把它传递给子窗体进行操作，然后在子窗体操作后，把它在返还给主窗体，这样主窗体的数据源只要acceptchanges就可以刷新了。

否则，你需要重新查询以及绑定。

[marvelstack]

可以对下面的代码变通实现，
//在另一个窗口中修改当前选定的DataGrid的行

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
//主窗体代码
namespace Zhzuo
{
public class Form1 : System.Windows.Forms.Form
{
private System.Windows.Forms.DataGrid dataGrid1;
private DataSet ds;
private System.Windows.Forms.Button button1;
/// <summary>
/// 必需的设计器变量。
/// </summary>
private System.ComponentModel.Container components = null;

public Form1()
{
InitializeComponent();
ds = new DataSet("MyDataSet");
InitData(ds);
this.dataGrid1.DataSource = this.ds;
this.dataGrid1.DataMember = this.ds.Tables[0].TableName;
}

/// <summary>
/// 清理所有正在使用的资源。
/// </summary>
protected override void Dispose( bool disposing )
{
if( disposing )
{
if (components != null)
{
components.Dispose();
}
}
base.Dispose( disposing );
}

#region Windows 窗体设计器生成的代码
/// <summary>
/// 设计器支持所需的方法 - 不要使用代码编辑器修改
/// 此方法的内容。
/// </summary>
private void InitializeComponent()
{
this.dataGrid1 = new System.Windows.Forms.DataGrid();
this.button1 = new System.Windows.Forms.Button();
((System.ComponentModel.ISupportInitialize)(this.dataGrid1)).BeginInit();
this.SuspendLayout();
//
// dataGrid1
//
this.dataGrid1.DataMember = "";
this.dataGrid1.HeaderForeColor = System.Drawing.SystemColors.ControlText;
this.dataGrid1.Location = new System.Drawing.Point(16, 20);
this.dataGrid1.Name = "dataGrid1";
this.dataGrid1.Size = new System.Drawing.Size(340, 160);
this.dataGrid1.TabIndex = 0;
this.dataGrid1.DoubleClick += new System.EventHandler(this.dataGrid1_DoubleClick);
//
// button1
//
this.button1.Location = new System.Drawing.Point(264, 196);
this.button1.Name = "button1";
this.button1.TabIndex = 1;
this.button1.Text = "修改";
this.button1.Click += new System.EventHandler(this.button1_Click);
//
// Form1
//
this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
this.ClientSize = new System.Drawing.Size(372, 229);
this.Controls.Add(this.button1);
this.Controls.Add(this.dataGrid1);
this.Name = "Form1";
this.Text = "Form1";
((System.ComponentModel.ISupportInitialize)(this.dataGrid1)).EndInit();
this.ResumeLayout(false);

}
#endregion

private void InitData(DataSet ds)
{
DataTable dt = new DataTable("TabeHost");
DataColumn dc = new DataColumn("IpAddress",typeof(string));
dt.Columns.Add(dc);
dc = new DataColumn("UserName",typeof(string));
dt.Columns.Add(dc);
dc = new DataColumn("Password",typeof(string));
dt.Columns.Add(dc);
ds.Tables.Add(dt);

DataRow dr = dt.NewRow();
dr["IpAddress"] = "192.192.132.229";
dr["UserName"] = "zhzuo";
dr["Password"] = "zhengzuo";
dt.Rows.Add(dr);

dr = dt.NewRow();
dr["IpAddress"] = "192.192.132.230";
dr["UserName"] = "11";
dr["Password"] = "12";
dt.Rows.Add(dr);

dr = dt.NewRow();
dr["IpAddress"] = "192.192.132.231";
dr["UserName"] = "123";
dr["Password"] = "12";
dt.Rows.Add(dr);

dr = dt.NewRow();
dr["IpAddress"] = "192.192.132.232";
dr["UserName"] = "22";
dr["Password"] = "788";
dt.Rows.Add(dr);
}

private void button1_Click(object sender, System.EventArgs e)
{
DataRowView drv = (DataRowView)this.BindingContext[this.ds,this.ds.Tables[0].TableName].Current;
Form2 form2 = new Form2(drv);
form2.ShowDialog();

}
private void dataGrid1_DoubleClick(object sender, System.EventArgs e)
{
button1_Click(button1,EventArgs.Empty);
}
}
}
//子窗体代码
＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝
using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;

namespace Zhzuo
{
/// <summary>
/// Form2 的摘要说明。
/// </summary>
public class Form2 : System.Windows.Forms.Form
{
private System.Windows.Forms.TextBox textBox1;
private System.Windows.Forms.TextBox textBox2;
private System.Windows.Forms.TextBox textBox3;
private System.Windows.Forms.Button button1;
private System.Windows.Forms.Button button2;
private DataRowView drv;
/// <summary>
/// 必需的设计器变量。
/// </summary>
private System.ComponentModel.Container components = null;

public Form2(DataRowView dr)
{
InitializeComponent();
this.drv = dr;
this.textBox1.Text = (string)drv["IpAddress"];
this.textBox2.Text = (string)drv["UserName"];
this.textBox3.Text = (string)drv["Password"];
}

/// <summary>
/// 清理所有正在使用的资源。
/// </summary>
protected override void Dispose( bool disposing )
{
if( disposing )
{
if(components != null)
{
components.Dispose();
}
}
base.Dispose( disposing );
}

#region Windows 窗体设计器生成的代码
/// <summary>
/// 设计器支持所需的方法 - 不要使用代码编辑器修改
/// 此方法的内容。
/// </summary>
private void InitializeComponent()
{
this.textBox1 = new System.Windows.Forms.TextBox();
this.textBox2 = new System.Windows.Forms.TextBox();
this.textBox3 = new System.Windows.Forms.TextBox();
this.button1 = new System.Windows.Forms.Button();
this.button2 = new System.Windows.Forms.Button();
this.SuspendLayout();
//
// textBox1
//
this.textBox1.Location = new System.Drawing.Point(28, 16);
this.textBox1.Name = "textBox1";
this.textBox1.TabIndex = 3;
this.textBox1.Text = "textBox1";
//
// textBox2
//
this.textBox2.Location = new System.Drawing.Point(28, 56);
this.textBox2.Name = "textBox2";
this.textBox2.TabIndex = 4;
this.textBox2.Text = "textBox2";
//
// textBox3
//
this.textBox3.Location = new System.Drawing.Point(28, 92);
this.textBox3.Name = "textBox3";
this.textBox3.TabIndex = 5;
this.textBox3.Text = "textBox3";
//
// button1
//
this.button1.Location = new System.Drawing.Point(152, 152);
this.button1.Name = "button1";
this.button1.TabIndex = 6;
this.button1.Text = "保存";
this.button1.Click += new System.EventHandler(this.button1_Click);
//
// button2
//
this.button2.Location = new System.Drawing.Point(236, 152);
this.button2.Name = "button2";
this.button2.TabIndex = 7;
this.button2.Text = "退出";
this.button2.Click += new System.EventHandler(this.button2_Click);
//
// Form2
//
this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
this.ClientSize = new System.Drawing.Size(324, 201);
this.Controls.Add(this.button2);
this.Controls.Add(this.button1);
this.Controls.Add(this.textBox3);
this.Controls.Add(this.textBox2);
this.Controls.Add(this.textBox1);
this.Name = "Form2";
this.Text = "Form2";
this.ResumeLayout(false);

}
#endregion

private void button1_Click(object sender, System.EventArgs e)
{
drv["IpAddress"] = this.textBox1.Text;
drv["UserName"] = this.textBox2.Text;
drv["Password"] = this.textBox3.Text;
}

private void button2_Click(object sender, System.EventArgs e)
{
this.Close();
}
}
}

[ttpps]

1.本人不喜欢写入具体的适配器的代码，个人认为没必要；
2.如果在适配器中写入代码，一些自定义功能则没法实现；
3.对于datagrid来说过早绑定有些功能无法实现

[caoyoucheng]

顶

[solsolsol]

Form1:

public void BindDg()
{
……
}
private void ShowForm2()
{
Form2 mm = new Form2();
mm.frm = (Form1)this.Parent;
mm.ShowDialog();
}


Form2:

public Form1 frm;
private void button2_Click(object sender, System.EventArgs e)
{
//UPDATE DB
//不知道楼主想要什么了，这里你用frm做你想要做的事情就好了
}

[solsolsol]

也可以这样
父窗体Form1
public void BindDg()
{
……
}
子窗体Form2
Form1 frm;
private void button2_Click(object sender, System.EventArgs e)
{
frm.BindDg();
}