Question

在从SQL源绑定数据时，我在设置GridView列宽时遇到问题。我已经测试了代码而没有绑定来自SQL源的数据，它运行得很好。我在这里粘贴两个代码（带有＆amp;没有SQL源代码），以便您更好地理解问题。我从＃34开始;没有来自SQL源的绑定数据＆＃34;。 GridView代码（.aspx）：

    <asp:GridView ID="GridView1" runat="server" AllowPaging="True" AutoGenerateColumns="true" AutoGenerateDeleteButton="True" AutoGenerateEditButton="True" CellPadding="4" OnRowDataBound="GridView1_RowDataBound">
            <PagerSettings Mode="NumericFirstLast" FirstPageText="First" LastPageText="Last" PageButtonCount="10" Position="Bottom" />
            <Columns>
                <asp:TemplateField HeaderText="File">
                    <ItemTemplate>
                        <asp:LinkButton ID="link" runat="server" CommandArgument='<%# Eval("Num1") %>' Text="Test" />
                    </ItemTemplate>
                </asp:TemplateField>
            </Columns>
        </asp:GridView>

背后的代码（.cs）是：

    using System;
    using System.Collections.Generic;
    using System.Data;
    using System.Data.SqlClient;
    using System.Linq;
    using System.Web;
    using System.Web.UI;
    using System.Web.UI.WebControls;

    namespace Sample_project_to_set_column_width_of_a_gridview
    {
       public partial class form1 : System.Web.UI.Page
        {
            protected void Page_Load(object sender, EventArgs e)
            {            
                if (!IsPostBack)
                {
                    Bind();
                }                   
            }

            protected void Bind()
            {
                 DataTable dt = new DataTable();
                 DataColumn dc1 = new DataColumn("Num1", typeof(string));
                 DataColumn dc2 = new DataColumn("Num2", typeof(string));
                 DataColumn dc3 = new DataColumn("Num3", typeof(string));
                 DataColumn dc4 = new DataColumn("Num4", typeof(string));
                 dt.Columns.Add(dc1);
                 dt.Columns.Add(dc2);
                 dt.Columns.Add(dc3);
                 dt.Columns.Add(dc4);
                 DataRow dr = dt.NewRow();
                 dr["Num1"] = "AAA";
                 dr["Num2"] = "BBBFFFF";
                 dr["Num3"] = "AAASSSSS";
                 dr["Num4"] = "BBBFFHHHF";

                 DataRow dr2 = dt.NewRow();
                 dr2["Num1"] = "CCC";
                 dr2["Num2"] = "DDDFFFFF";
                 dr2["Num3"] = "CCC";
                 dr2["Num4"] = "DDDFFFFF";

                 dt.Rows.Add(dr);
                 dt.Rows.Add(dr2);
                 GridView1.DataSource = dt;
                 GridView1.DataBind();

            }

            protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
            {
                if (e.Row.RowType == DataControlRowType.DataRow)
                {
                    e.Row.Cells[0].Width = 100;
                    e.Row.Cells[0].Style["border-right"] = "2px solid #666666";
                    e.Row.Cells[0].BackColor = System.Drawing.Color.CornflowerBlue;

                    e.Row.Cells[1].Width = 200;
                    e.Row.Cells[1].Style["border-right"] = "2px solid #666666";
                    e.Row.Cells[1].BackColor = System.Drawing.Color.CornflowerBlue;

                    e.Row.Cells[2].Width = 400;
                    e.Row.Cells[2].Style["border-right"] = "2px solid #666666";
                    e.Row.Cells[2].BackColor = System.Drawing.Color.Lime;

                    e.Row.Cells[3].Width = 600;
                    e.Row.Cells[3].Style["border-right"] = "2px solid #666666";
                    e.Row.Cells[3].BackColor = System.Drawing.Color.Red;

                    e.Row.Cells[4].Width = 800;
                    e.Row.Cells[4].Style["border-right"] = "2px solid #666666";
                    e.Row.Cells[4].BackColor = System.Drawing.Color.Yellow;

                }
            }
        }
    }

以上代码完美无缺。这是a link以查看所需的输出。现在，当我通过SQL源将数据绑定到GridView时，我无法看到所需的结果。修改后的代码隐藏文件（.cs）代码为：

    using System;
    using System.Collections.Generic;
    using System.Data;
    using System.Data.SqlClient;
    using System.Linq;
    using System.Web;
    using System.Web.UI;
    using System.Web.UI.WebControls;

    namespace Sample_project_to_set_column_width_of_a_gridview
    {
        public partial class form1 : System.Web.UI.Page
        {
        protected void Page_Load(object sender, EventArgs e)
        {            
            if (!IsPostBack)
            {
                Bind();
            }
        }

        protected void Bind()
        {
             SqlConnection con = new SqlConnection("Data Source=MEHDI-PC\\SQLEXPRESS; Initial Catalog=PIMS; Integrated Security=true;");
              {
                  using (SqlCommand cmd = new SqlCommand())
                  {
                      String sql = "select * from dbo.Documents";
                      cmd.Connection = con;
                      cmd.CommandText = sql;
                      con.Open();
                      DataSet ds = new DataSet();
                      using (SqlDataAdapter adp = new SqlDataAdapter(cmd))
                      {
                          adp.Fill(ds);
                      }
                      GridView1.DataSource = ds.Tables[0];
                      GridView1.DataBind();
                  }
              }
        }

        protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
        {
            if (e.Row.RowType == DataControlRowType.DataRow)
            {
                e.Row.Cells[0].Width = 100;
                e.Row.Cells[0].Style["border-right"] = "2px solid #666666";
                e.Row.Cells[0].BackColor = System.Drawing.Color.CornflowerBlue;

                e.Row.Cells[1].Width = 200;
                e.Row.Cells[1].Style["border-right"] = "2px solid #666666";
                e.Row.Cells[1].BackColor = System.Drawing.Color.CornflowerBlue;

                e.Row.Cells[2].Width = 400;
                e.Row.Cells[2].Style["border-right"] = "2px solid #666666";
                e.Row.Cells[2].BackColor = System.Drawing.Color.Lime;

                e.Row.Cells[3].Width = 600;
                e.Row.Cells[3].Style["border-right"] = "2px solid #666666";
                e.Row.Cells[3].BackColor = System.Drawing.Color.Red;

                e.Row.Cells[4].Width = 800;
                e.Row.Cells[4].Style["border-right"] = "2px solid #666666";
                e.Row.Cells[4].BackColor = System.Drawing.Color.Yellow;

            }
        }
    }
}

通过运行此SQL绑定数据得到的输出可以访问here。

任何人都可以注意到从SQL源绑定时无法设置宽度的原因。提前谢谢。

Answer 1

你可以像这样设置gridview的宽度

    protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
    { 
if (e.Row.RowType == DataControlRowType.DataRow)
            {
         e.Row.Cells[1].Width = 1;
         e.Row.Cells[0].Width = 1;
         e.Row.Cells[4].Width = 75;
         e.Row.Cells[5].Width = 1;                
}
    }

通过.aspx页面的另一个选项

<Columns>

<asp:BoundField DataField="" HeaderText="" ItemStyle-Width="5%" ItemStyle-VerticalAlign="Top" />

<asp:BoundField DataField="" HeaderText="" ItemStyle-Width="25%" ItemStyle-VerticalAlign="Top" />

<asp:BoundField DataField="" HeaderText="" ItemStyle-Width="30%"

ItemStyle-VerticalAlign="" />

<asp:BoundField DataField="" HeaderText="" ItemStyle-Width="25%" ItemStyle-VerticalAlign="Top" />

<asp:BoundField DataField="" HeaderText="" ItemStyle-Width="10%"

ItemStyle-VerticalAlign="Top" />

</Columns>

从sql源绑定数据时，在运行时设置GridView列宽

1 个答案: