Question

C#中，在Form中建立个DataGridView,怎么样显示SQL数据库里面的表，请详细指导

我是新手，在自学C#，想请教各位高手：
C#中，在Form中建立个DataGridView,怎么样显示SQL数据库里面的表，请详细指导:
1.我想利用SqlConnection、SqlCommand、SqlDataAdapter和DataSet实现表内容在GridView中显示。

2.要有详细的代码哦。

Answer 1

using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;

public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
SqlConnection conn = new SqlConnection();
conn.ConnectionString = "server=(local);uid=sa;pwd=sa;database=DatabaseName";
SqlCommand cmd = new SqlCommand();
cmd.CommandText = "select * from DatabaseName";
cmd.Connection = conn;
SqlDataAdapter sda = new SqlDataAdapter();
sda.SelectCommand = cmd;
conn.Open();
DataSet ds = new DataSet();
sda.Fill(ds,DatabaseName);
conn.Close();
this.myDataGrid.DataSource = ds;
this.DataBind();
}
}

对着书看看每句代码的意思

Answer 2

using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;

public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
SqlConnection conn = new SqlConnection();
conn.ConnectionString = "server=(local);uid=sa;pwd=sa;database=DatabaseName";
SqlCommand cmd = new SqlCommand();
cmd.CommandText = "select * from DatabaseName";
cmd.Connection = conn;
SqlDataAdapter sda = new SqlDataAdapter();
sda.SelectCommand = cmd;
conn.Open();
DataSet ds = new DataSet();
sda.Fill(ds,DatabaseName);
conn.Close();
this.myDataGrid.DataSource = ds;
this.DataBind();
}
}

就用这个吧，你先连上数据库，在看看效果，以后尝试的写的更规范点

Answer 3

SqlConnection conn = new SqlConnection("server=(local);uid=sa;pwd=sa;database=DatabaseName);
SqlCommand cmd = new SqlCommand("select * from DatabaseName",conn);
SqlDataAdapter sda = new SqlDataAdapter();
sda.SelectCommand = cmd;
conn.Open();
DataSet ds = new DataSet();
sda.Fill(ds);
this.DataGridView1.DataSource = ds.tables[0];
conn.Close();

Answer 4

DataGridView.datasourse = 方法名（）;
DataGridView.databind();
方法负责查询表里内容，下面是方法
SqlDataAdapter catDA = new SqlDataAdapter("SELECT CategoryID, CategoryName FROM Categories", nwindConn);
DataTable t = new DataTable();
catDA .Fill(t);

return t;

Answer 5

DataGridView1.datasouse = sqlcommand.ExecuteNonQuery();
DataGridView1.datebind();

这样就可以了....