如何向上和向下移动记录

问题描述

我想在网格视图之外单击按钮（向上/向下）上下移动所选行。

请帮帮我。

I want to move the selected row Up and down on click of Buttons (Up/Down) which are outside the gridview.
Please help me.

推荐答案

protected void Page_Load(object sender, EventArgs e)
{
    if (!IsPostBack)
    {
        DataTable dt =GetTable();
        GridView1.DataSource = dt;
        GridView1.DataBind();
        ViewState["Table"] = dt;
    }

}

protected void ButtonUp_Click(object sender, EventArgs e)
{
    int index = GridView1.SelectedIndex;
    if (index >0)
    {
          DataTable dtUp = (DataTable)ViewState["Table"];
          DataRow row = dtUp.NewRow();
          row.ItemArray = dtUp.Rows[index].ItemArray;
          dtUp.Rows.RemoveAt(index);
          dtUp.Rows.InsertAt(row, index - 1);
          dtUp.AcceptChanges();
          GridView1.DataSource = dtUp;
          GridView1.DataBind();
          ViewState["Table"] = dtUp;
    }
}

protected void ButtonDown_Click(object sender, EventArgs e)
{
    int index = GridView1.SelectedIndex;
    if (index < GridView1.Rows.Count)
    {
        DataTable dtdown = (DataTable)ViewState["Table"];
        DataRow row = dtdown.NewRow();
        row.ItemArray = dtdown.Rows[index].ItemArray;
        dtdown.Rows.RemoveAt(index);
        dtdown.Rows.InsertAt(row, index + 1);
        dtdown.AcceptChanges();
        GridView1.DataSource = dtdown;
        GridView1.DataBind();
        ViewState["Table"] = dtdown;
    }
}

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