动态GridView +DataTable

喜欢ヅ旅行 2021-11-02 04:10 328阅读 0赞

<asp:GridView ID="GridView1" runat="server"  
                onrowediting="GridView1\_RowEditing" OnRowCancelingEdit="GridView1\_RowCancelingEdit" OnRowDeleting="GridView1\_RowDeleting" OnRowUpdating="GridView1\_RowUpdating">  
                <Columns>  
                    <asp:CommandField ShowEditButton="True" />  
                    <asp:CommandField ShowDeleteButton="True" />  
                </Columns>  
            </asp:GridView>  
             
            <table>  
                <tr>  
                    <td>text:<asp:TextBox ID="newtextTextBox" runat="server"></asp:TextBox></td>  
                    <td>amount:<asp:TextBox ID="amountTextBox" runat="server"></asp:TextBox></td>  
                </tr>  
            </table>  
            <asp:Button ID="addnewlineButton" runat="server" Text="add new line" OnClick="addnewlineButton\_Click" />

protected void Page\_Load(object sender, EventArgs e)  
    \{  
        if (!Page.IsPostBack)  
        \{  
            DataTable dt = new DataTable();

dt.Columns.Add("text");  
            dt.Columns.Add("amount");  
            ViewState\["table"\] = dt;  
            BindGrid();  
        \}

private void BindGrid()  
    \{  
        DataTable dt = ViewState\["table"\] as DataTable;  
        if (dt != null)  
        \{  
            GridView1.DataSource = dt;  
            GridView1.DataBind();  
        \}

protected void GridView1\_RowEditing(object sender, GridViewEditEventArgs e)  
    \{  
        GridView1.EditIndex = e.NewEditIndex;  
        BindGrid();  
    \}

protected void GridView1\_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)  
    \{  
        GridView1.EditIndex = -1;  
        BindGrid();  
    \}

protected void GridView1\_RowDeleting(object sender, GridViewDeleteEventArgs e)  
    \{  
        DataTable dt = ViewState\["table"\] as DataTable;  
        if (dt != null)  
        \{  
            dt.Rows.RemoveAt(e.RowIndex);  
            GridView1.EditIndex = -1;  
            BindGrid();  
        \}  
         
    \}

protected void GridView1\_RowUpdating(object sender, GridViewUpdateEventArgs e)  
    \{  
         DataTable dt=ViewState\["table"\] as DataTable;  
         if (dt != null)  
         \{  
             dt.Rows\[e.RowIndex\]\[0\] = ((TextBox)GridView1.Rows\[e.RowIndex\].Cells\[2\].Controls\[0\]).Text;  
             dt.Rows\[e.RowIndex\]\[1\] = ((TextBox)GridView1.Rows\[e.RowIndex\].Cells\[3\].Controls\[0\]).Text;  
             GridView1.EditIndex = -1;  
             BindGrid();

\}  
    \}

protected void addnewlineButton\_Click(object sender, EventArgs e)  
    \{  
        DataTable dt=ViewState\["table"\] as DataTable;  
        if (dt != null)  
        \{  
            DataRow dr = dt.NewRow();  
            dr\[0\] = newtextTextBox.Text;  
            dr\[1\] = amountTextBox.Text;  
            dt.Rows.Add(dr);  
            ViewState\["table"\] = dt;

BindGrid();  
            newtextTextBox.Text = "";  
            amountTextBox.Text = "";  
             
        \}

转载于:https://www.cnblogs.com/hubj/archive/2008/10/14/1310758.html