Bra*_*nut 45 c# asp.net datatable
我有疑问,也许这里有人不介意帮助我.我可以说3个数据表,每个数据表都有以下列:
大小,数量,数量,持续时间
数据表和值的名称
LivingRoom
================
1
1
1
1
2
2
2
2
BathRoom
================
3
3
3
3
4
4
4
4
BedRoom
=================
5
5
5
5
6
6
6
6
现在我正在尝试构建一个html发票,我可以循环遍历所有数据表并输出以下html输出,非常基本:
<table>
<tr>
<td>Area</td>
</tr>
<tr>
<td>Living Room</td>
</tr>
<tr>
<td>Size</td>
<td>Quantity</td>
<td>Amount</td>
<td>Duration</td>
</tr>
<tr>
<td>1</td>
<td>1</td>
<td>1</td>
<td>1</td>
</tr>
<tr>
<td>2</td>
<td>2</td>
<td>2</td>
<td>2</td>
</tr>
<tr>
<td>Area</td>
</tr>
<tr>
<td>Bathroom</td>
</tr>
<tr>
<td>Size</td>
<td>Quantity</td>
<td>Amount</td>
<td>Duration</td>
</tr>
<tr>
<td>3</td>
<td>3</td>
<td>3</td>
<td>3</td>
</tr>
<tr>
<td>4</td>
<td>4</td>
<td>4</td>
<td>4</td>
</tr>
<tr>
<td>Area</td>
</tr>
<tr>
<td>Bedroom</td>
</tr>
<tr>
<td>Size</td>
<td>Quantity</td>
<td>Amount</td>
<td>Duration</td>
</tr>
<tr>
<td>5</td>
<td>5</td>
<td>5</td>
<td>5</td>
</tr>
<tr>
<td>6</td>
<td>6</td>
<td>6</td>
<td>6</td>
</tr>
</table>
所以几乎该区域将具有数据表的名称,然后在每个区域下循环该特定数据表并以该格式输出数据.我无法弄清楚循环逻辑或如何做到这一点,我最近几天一直在打破这个问题.也许我只是以错误的方式思考它,但我真的可以在这方面使用一些帮助.
Ome*_*dan 105
使用此功能:
public static string ConvertDataTableToHTML(DataTable dt)
{
string html = "<table>";
//add header row
html += "<tr>";
for(int i=0;i<dt.Columns.Count;i++)
html+="<td>"+dt.Columns[i].ColumnName+"</td>";
html += "</tr>";
//add rows
for (int i = 0; i < dt.Rows.Count; i++)
{
html += "<tr>";
for (int j = 0; j< dt.Columns.Count; j++)
html += "<td>" + dt.Rows[i][j].ToString() + "</td>";
html += "</tr>";
}
html += "</table>";
return html;
}
Sum*_*jee 11
public static string toHTML_Table(DataTable dt)
{
if (dt.Rows.Count == 0) return ""; // enter code here
StringBuilder builder = new StringBuilder();
builder.Append("<html>");
builder.Append("<head>");
builder.Append("<title>");
builder.Append("Page-");
builder.Append(Guid.NewGuid());
builder.Append("</title>");
builder.Append("</head>");
builder.Append("<body>");
builder.Append("<table border='1px' cellpadding='5' cellspacing='0' ");
builder.Append("style='border: solid 1px Silver; font-size: x-small;'>");
builder.Append("<tr align='left' valign='top'>");
foreach (DataColumn c in dt.Columns)
{
builder.Append("<td align='left' valign='top'><b>");
builder.Append(c.ColumnName);
builder.Append("</b></td>");
}
builder.Append("</tr>");
foreach (DataRow r in dt.Rows)
{
builder.Append("<tr align='left' valign='top'>");
foreach (DataColumn c in dt.Columns)
{
builder.Append("<td align='left' valign='top'>");
builder.Append(r[c.ColumnName]);
builder.Append("</td>");
}
builder.Append("</tr>");
}
builder.Append("</table>");
builder.Append("</body>");
builder.Append("</html>");
return builder.ToString();
}
我已经看到一些值得注意的解决方案,正如Omer Eldan所说.但是接下来.ASP C#
using System.Data;
using System.Web.UI.HtmlControls;
public static Table DataTableToHTMLTable(DataTable dt, bool includeHeaders)
{
Table tbl = new Table();
TableRow tr = null;
TableCell cell = null;
int rows = dt.Rows.Count;
int cols = dt.Columns.Count;
if (includeHeaders)
{
TableHeaderRow htr = new TableHeaderRow();
TableHeaderCell hcell = null;
for (int i = 0; i < cols; i++)
{
hcell = new TableHeaderCell();
hcell.Text = dt.Columns[i].ColumnName.ToString();
htr.Cells.Add(hcell);
}
tbl.Rows.Add(htr);
}
for (int j = 0; j < rows; j++)
{
tr = new TableRow();
for (int k = 0; k < cols; k++)
{
cell = new TableCell();
cell.Text = dt.Rows[j][k].ToString();
tr.Cells.Add(cell);
}
tbl.Rows.Add(tr);
}
return tbl;
}
为何这个解决方案 因为您可以轻松地将其添加到面板,即:
panel.Controls.Add(DataTableToHTMLTable(dtExample,true));
第二个问题,为什么你有一个列数据表而不仅仅是数组？你确定这些DataTable是统一的,因为如果数据是锯齿状的那么它是没用的.如果你真的必须加入这些DataTables,那么有很多Linq操作的例子,或者只是使用(注意同名列,因为如果不处理,这将在linq操作和此解决方案中发生冲突):
public DataTable joinUniformTable(DataTable dt1, DataTable dt2)
{
int dt2ColsCount = dt2.Columns.Count;
int dt1lRowsCount = dt1.Rows.Count;
DataColumn column;
for (int i = 0; i < dt2ColsCount; i++)
{
column = new DataColumn();
string colName = dt2.Columns[i].ColumnName;
System.Type colType = dt2.Columns[i].DataType;
column.ColumnName = colName;
column.DataType = colType;
dt1.Columns.Add(column);
for (int j = 0; j < dt1lRowsCount; j++)
{
dt1.Rows[j][colName] = dt2.Rows[j][colName];
}
}
return dt1;
}
你的解决方案看起来像:
panel.Controls.Add(DataTableToHTMLTable(joinUniformTable(joinUniformTable(LivDT,BathDT),BedDT),true));
解读其余的,玩得开心.