Sql表不映射到Datagrid

Question

我有一個表dbo.MSreplication_options使用connectionString，我試圖將此表映射到datagrid1.DataSource。

SqlConnection cnn; 
SqlCommand con; 
SqlDataAdapter da; 
DataSet ds; 

protected void Page_Load(object sender, EventArgs e) 
{ 
    string strcon = ConfigurationManager.ConnectionStrings["masterConnectionString"].ConnectionString; 

    cnn = new SqlConnection(strcon); 
    con = new SqlCommand("select * from dbo.MSreplication_options"); 
    con.Connection = cnn; 
    ds = new DataSet(); 
    da = new SqlDataAdapter(con); 
    cnn.Open(); 
    da.Fill(ds); 
    cnn.Close(); 
    DataGrid1.DataSource = ds.Tables[0].ToString(); 
} 

web配置

<connectionStrings> 

    <add name="masterConnectionString" connectionString="Data Source=node39\SQLExpress;Initial Catalog=master;Integrated Security=True" 
     providerName="System.Data.SqlClient" /> 
    </connectionStrings> 

在運行時，它不映射到DataGrid1中？我在做什麼特別的錯誤？

Answer 1

你缺少DataGrid1.DataBind();

除了這個Memory Management沒有被照顧。

string strcon = ConfigurationManager.ConnectionStrings["masterConnectionString"].ConnectionString; 
using (SqlConnection cnn = new SqlConnection(strcon)) 
{ 
    con = new SqlCommand("select * from dbo.MSreplication_options"); 
    con.Connection = cnn; 
    using (DataSet ds = new DataSet()) 
    { 
     da = new SqlDataAdapter(con); 
     cnn.Open(); 
     da.Fill(ds); 
     cnn.Close(); 
     DataGrid1.DataSource = ds.Tables[0].ToString(); 
     DataGrid1.DataBind(); 
    } 
} 

Answer 2

在DataGrid1.DataSource = ds.Tables [0] .ToString（）;之後執行此操作。

DataGrid1.DataBind()