DataGridView

DataGridView

首先，绑定数据

Page_Lode事件

一、绑定数据库字段

二、传值

（1） 绑定HyperlinkFirld字段传值

（2） 自定义绑定超级链接传值

三、分页

四、编辑、更新、取消

   //编辑
    protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e)
    {
        GridView1.EditIndex = e.NewEditIndex;
        ShowBind();
    }



    //取消
    protected void GridView1_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)
    {
        GridView1.EditIndex = -1;
        ShowBind();
    }

//更新

protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)

{

string id = GridView1.DataKeys[e.RowIndex].Value.ToString();

string product_name = ((TextBox)GridView1.Rows[e.RowIndex].Cells[1].Controls[0]).Text;

string amount = ((TextBox)GridView1.Rows[e.RowIndex].Cells[2].Controls[0]).Text;

string price = ((TextBox)GridView1.Rows[e.RowIndex].Cells[3].Controls[0]).Text;

string barcode = ((TextBox)GridView1.Rows[e.RowIndex].Cells[4].Controls[0]).Text;

string sql = "update products set product_name='" + product_name + "',amount='"

+ amount + "',price='" + price + "',barcode='" + barcode + "' where id=" + id;

SqlConnection conn = new SqlConnection("server=.;database=SuperMarket;uid=sa;pwd=sa");

SqlCommand cmd = new SqlCommand(sql, conn);

if (conn.State == ConnectionState.Closed)

{

conn.Open();

cmd.ExecuteNonQuery();

conn.Close();

}

GridView1.EditIndex = -1;

ShowBind();

}

五、删除

//更新

protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)

{

string id = GridView1.DataKeys[e.RowIndex].Value.ToString();

string product_name = ((TextBox)GridView1.Rows[e.RowIndex].Cells[1].Controls[0]).Text;

string amount = ((TextBox)GridView1.Rows[e.RowIndex].Cells[2].Controls[0]).Text;

string price = ((TextBox)GridView1.Rows[e.RowIndex].Cells[3].Controls[0]).Text;

string barcode = ((TextBox)GridView1.Rows[e.RowIndex].Cells[4].Controls[0]).Text;

string sql = "update products set product_name='" + product_name + "',amount='"

+ amount + "',price='" + price + "',barcode='" + barcode + "' where id=" + id;

SqlConnection conn = new SqlConnection("server=.;database=SuperMarket;uid=sa;pwd=sa");

SqlCommand cmd = new SqlCommand(sql, conn);

if (conn.State == ConnectionState.Closed)

{

conn.Open();

cmd.ExecuteNonQuery();

conn.Close();

}

GridView1.EditIndex = -1;

ShowBind();

}

删除对话框

第一种，

//删除提示框

//============= 第一种 ==============

//*事件（在对行进行数据绑定后的激发）

protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)

{

if (e.Row.RowType == DataControlRowType.DataRow)

{

e.Row.Cells[7].Attributes.Add("onclick", "return confirm('你确认要删除吗?')");

}

}
 

第二种，事件

//删除提示框

//============= 第二种 ==============

protected void GridView1_RowCreated(object sender, GridViewRowEventArgs e)

{

//e.Row.RowType判断gridview的数据行，而不是页眉和页脚

if (e.Row.RowType == DataControlRowType.DataRow)

{

//e.Row.Cells[7].Controls.Count > 0 判断单元格7内是否有控件，如果没有则不进行任何操作，注意点击编辑按钮时，删除按钮不可见

if (e.Row.Cells[7].Controls.Count > 0)

{

if (((LinkButton)(e.Row.Cells[7].Controls[0])).Text == "删除")

{

((LinkButton)(e.Row.Cells[7].Controls[0])).Attributes.Add("onclick", "return confirm('你确认要删除吗?')");

//e.Row.Cells[7].Attributes.Add("onclick", "return confirm('你确认要删除吗?')");

}

}

}

}

六、模版