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public
string GetJsonFromDataTable(DataTable dt, int
total, bool
ShowFooter, string
fields, string
inputfiled, string
ShowMessage = "合计:", string
filter = "")
{
StringBuilder stringBuilder = new
StringBuilder();
if
(dt.Rows.Count == 0)
{
stringBuilder.Append("{ ");
stringBuilder.Append("\"rows\":[ ");
stringBuilder.Append("]");
stringBuilder.Append(",");
stringBuilder.Append("\"total\":");
stringBuilder.Append(total);
stringBuilder.Append(",\"footer\":[");
stringBuilder.Append("]");
stringBuilder.Append("}");
return
stringBuilder.ToString();
}
stringBuilder.Append("{ ");
stringBuilder.Append("\"rows\":[ ");
for
(int
i = 0; i < dt.Rows.Count; i++)
{
stringBuilder.Append("{ ");
for
(int
j = 0; j < dt.Columns.Count; j++)
{
if
(j < dt.Columns.Count - 1)
{
stringBuilder.Append(string.Concat(new
string[]
{
"\"",
dt.Columns[j].ColumnName.ToString().ToLower(),
"\":\"",
this.JsonCharFilter(dt.Rows[i][j].ToString()),
"\","
}));
}
else
{
if
(j == dt.Columns.Count - 1)
{
stringBuilder.Append(string.Concat(new
string[]
{
"\"",
dt.Columns[j].ColumnName.ToString().ToLower(),
"\":\"",
this.JsonCharFilter(dt.Rows[i][j].ToString()),
"\""
}));
}
}
}
if
(i == dt.Rows.Count - 1)
{
stringBuilder.Append("} ");
}
else
{
stringBuilder.Append("}, ");
}
}
stringBuilder.Append("]");
stringBuilder.Append(",");
stringBuilder.Append("\"total\":");
stringBuilder.Append(total);
if
(ShowFooter && fields.Length > 0 && inputfiled.Length > 0)
{
stringBuilder.Append(",\"footer\":[{");
stringBuilder.Append(string.Concat(new
string[]
{
"\"",
inputfiled,
"\":\"<span style=‘color:red; font-weight:bold‘>",
ShowMessage,
"</span>\","
}));
string[] array = fields.Split(new
char[]
{
‘,‘
});
for
(int
k = 0; k < array.Length; k++)
{
if
(k < array.Length - 1)
{
stringBuilder.Append(string.Concat(new
object[]
{
"\"",
array[k],
"\":\"",
dt.Compute("sum("
+ array[k] + ")", filter),
"\","
}));
}
else
{
stringBuilder.Append(string.Concat(new
object[]
{
"\"",
array[k],
"\":\"",
dt.Compute("sum("
+ array[k] + ")", filter),
"\""
}));
}
}
stringBuilder.Append("}]");
}
stringBuilder.Append("}");
return
stringBuilder.ToString();
}
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