Question

我想每次从数据集ds到dc添加一行。我想继续更新Gridview以扩大表格。但是当我在我的代码中尝试它时。 Gridview只能根据我在文本框中输入的内容显示一行。

public partial class TestGridview : System.Web.UI.Page
{
    int count = 0;
    DataSet dc = new DataSet();
    protected void Page_Load(object sender, EventArgs e)
    {

        string text = TextBox1.Text;

        SqlConnection con = new              SqlConnection(ConfigurationManager.ConnectionStrings["XMLConnectionString"].ConnectionString);

        // Create the command object
        string str = "SELECT * FROM XML WHERE [Part_Numbber] = @textInput";

        SqlCommand cmd = new SqlCommand(str, con);
        cmd.Parameters.AddWithValue("textInput", text);

        SqlDataAdapter da = new SqlDataAdapter(cmd);

        DataSet ds = new DataSet();
        da.Fill(ds, "XML");

        if (count == 0)
        { 
            dc = ds.Clone();
            count ++;
        }

        for (int i = 0; i < ds.Tables[0].Rows.Count; i++)
        {
            if (ds.Tables[0].Rows[i].ItemArray[0].ToString() != "NULL")
            {

                dc.Tables[0].ImportRow(ds.Tables[0].Rows[i]);
            }
        }



        GridView1.DataSource = dc;
        GridView1.DataBind();

    }
}

Answer 1

您可以使用以下代码将1 DT中的行追加到其他最终DT。 LikeWise

foreach (DataRow dataRow in dt2.Rows)
        {
            DataRow dr = dt1.NewRow();
            dr[0] = Convert.ToInt32(dataRow[0]);
            dr[1] = dataRow[1].ToString();
            dr[2] = dataRow[2].ToString();
            dt1.Rows.Add(dr);
        }
        foreach (DataRow dataRow in dt3.Rows)
        {
            DataRow dr = dt1.NewRow();
            dr[0] = Convert.ToInt32(dataRow[0]);
            dr[1] = dataRow[1].ToString();
            dr[2] = dataRow[2].ToString();
            dt1.Rows.Add(dr);
        }
        foreach (DataRow dataRow in dt4.Rows)
        {
            DataRow dr = dt1.NewRow();
            dr[0] = Convert.ToInt32(dataRow[0]);
            dr[1] = dataRow[1].ToString();
            dr[2] = dataRow[2].ToString();
            dt1.Rows.Add(dr);
        }

如何将行从一个数据集附加到另一个数据集？

1 个答案: