c# - Gridview 批量更新

Question

从这个链接：

asp.net 网格视图批量更新所有单元格

我做了以下事情：

 protected void ButtonUpdate_Click(object sender, EventArgs e)
    {
       // foreach (GridViewRow row in GridView1.Rows)

       // {

        int RowIndex = 0;
        GridViewRow row = (GridViewRow)GridView1.Rows[RowIndex];

            Int32 intresortID = Convert.ToInt32(Request.QueryString["TypeID"]);
            Label dtm = row.FindControl("Label1") as Label;
            Label strRoomType = row.FindControl("strRoomTypeLabel") as Label;
            Label strDescription = row.FindControl("Label3") as Label;
            TextBox Qty = row.FindControl("intQtyTextBox") as TextBox;
            TextBox Price = row.FindControl("curPriceTextBox") as TextBox;
            Label intWSCode = row.FindControl("intWSCodeLabel") as Label;

            string connStr = ConfigurationManager.ConnectionStrings["bedbankstandssConnectionString"].ConnectionString;
            SqlConnection Con = new SqlConnection(connStr);
            SqlCommand cmd = new SqlCommand("Update tblAvailable set intqty=@intQty, curprice=@curprice where intresortid=@intresortid and dtm=@dtm and strroomtype=@strroomtype",Con);


            //SqlParameter ddtm= new SqlParameter("@dtm",dtm) ;
            //SqlParameter sstrRoomType = new SqlParameter("@strroomtype", strRoomType);
            //SqlParameter qQty = new SqlParameter("@intQty", Qty);
            //SqlParameter pPrice =new SqlParameter("@curPrice",Price);
            //SqlParameter resortID = new SqlParameter("@intResortID", intresortID);
            cmd.Parameters.AddWithValue("@dtm",dtm.Text.Trim());
            cmd.Parameters.AddWithValue("@strroomtype",strRoomType.Text.Trim());
            cmd.Parameters.AddWithValue("@intQty", Qty.Text.Trim());
            cmd.Parameters.AddWithValue("@curPrice",Price.Text.Trim());
            cmd.Parameters.AddWithValue("@intResortID",intresortID);
            Con.Open();
            cmd.ExecuteNonQuery();
            GridView1.EditIndex = -1;
            DataBind();





       // }
    }

但是只有一行被更新，第一行。

请问有人能告诉我哪里出错了。

Answer 1

你已经注释掉了循环，那么你为什么想知道只有一行被更新了？

foreach (GridViewRow row in GridView1.Rows)
{
    // ...
}

除此之外，使用using-statement你的SqlConnection并SqlCommand确保它被处理/关闭。

using(SqlConnection Con = new SqlConnection(connStr))
{
    using(SqlCommand cmd = new SqlCommand("Update tblAvailable set intqty=@intQty, curprice=@curprice where intresortid=@intresortid and dtm=@dtm and strroomtype=@strroomtype",Con))
    {
        // ...
    }
}