本文整理汇总了C#中DataProvider.GetReader方法的典型用法代码示例。如果您正苦于以下问题：C# DataProvider.GetReader方法的具体用法？C# DataProvider.GetReader怎么用？C# DataProvider.GetReader使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类DataProvider的用法示例。
在下文中一共展示了DataProvider.GetReader方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: GetEnumScript
public static string GetEnumScript(DataProvider provider, TableSchema.Table tbl, bool GenerateEnumDebugText, string[] EnumSettings,
string[] EnumSettingsExclude, ICodeLanguage language)
{
string rtn = "";
bool IsVb = (language.Identifier=="VB.NET");
string commentmarker = (IsVb ? "'" : "//");
if (GenerateEnumDebugText) { rtn += "\r\n\r\n\t\t" + commentmarker + " tbl: " + tbl.Name; }
for (int k = 0; k < EnumSettings.Length; k++) {
string enumSetting = EnumSettings[k];
string enumSettingExlude = "";
if (EnumSettingsExclude.Length > k) { enumSettingExlude = EnumSettingsExclude[k]; }
string[] settings = enumSetting.Split(new char[] { ':' });
string regExFind = "";
if (settings.Length > 0) { regExFind = settings[0].Trim(); }
bool matched = regExFind.Length > 0
&& Regex.IsMatch(tbl.Name, regExFind, RegexOptions.IgnoreCase);
bool excluded = enumSettingExlude.Trim() != ""
&& Regex.IsMatch(tbl.Name, enumSettingExlude.Trim(), RegexOptions.IgnoreCase);
bool found = matched && !excluded;
if (GenerateEnumDebugText) { rtn += "\r\n\t\t" + commentmarker + " " + k.ToString() + ": " + (matched ? "" : "not ") + "matched '" + regExFind + "'"; }
if (GenerateEnumDebugText) { rtn += "\r\n\t\t" + commentmarker + " " + k.ToString() + ": " + (excluded ? "" : "not ") + "excluded '" + enumSettingExlude.Trim() + "'"; }
if (found) {
string SqlScript = "";
//if (GenerateEnumDebugText) { SqlScript += "\r\n\t\t// tbl: " + tbl.Name + "\r\n\t\t// match: " + enumSetting; }
// Get Enum Details
string EnumName = "";
string IdCol = "";
string DescriptionCol = "";
string multiKeyCol = "";
string SqlWhereClause = "";
bool idColIsString = false;
bool isMulti = false;
bool idColFound = false;
bool descColFound = false;
bool multiKeyColFound = false;
if (settings.Length > 1) { EnumName = settings[1].Trim(); }
if (EnumName.StartsWith(MultiMarker, StringComparison.InvariantCultureIgnoreCase)) {
isMulti = true;
multiKeyCol = EnumName.Substring(MultiMarker.Length);
}
if (settings.Length > 2) { IdCol = settings[2].Trim(); }
if (settings.Length > 3) { DescriptionCol = settings[3].Trim(); }
if (settings.Length > 4) { SqlWhereClause = settings[4].Trim(); }
// check the cols do actually exist if specified
foreach (var col in tbl.Columns) {
if (IdCol == "" && col.IsPrimaryKey) { IdCol = col.ColumnName; }
if (DescriptionCol == "" && !col.IsPrimaryKey && !col.IsForeignKey
&& col.DataType == System.Data.DbType.String) { DescriptionCol = col.ColumnName; }
if (IdCol == col.ColumnName) { idColFound = true; idColIsString = (col.DataType == System.Data.DbType.String); }
if (DescriptionCol == col.ColumnName) { descColFound = true; }
if (isMulti && multiKeyCol == col.ColumnName) { multiKeyColFound = true; }
}
if (EnumName == "") { EnumName = GetEnumName(tbl.ClassName, idColIsString); }
// generate the script or a warning message
if (!idColFound || !descColFound || (isMulti && !multiKeyColFound)) {
SqlScript += "\r\n\t\t" + commentmarker + " " + tbl.Name + ": enumSetting could not be matched to ID" + (isMulti ? ", Key " : "")
+ " and Description columns. Setting=" + enumSetting + "\r\n";
}
else {
//pull the tables in a reader
int rowCount = 0;
List<string> enumValList = new List<string>();
string enumMemberScript = "";
string lastKeyVal = "";
string sql = GetEnumSql(IdCol, DescriptionCol, multiKeyCol, tbl.Name, SqlWhereClause);
try {
using (IDataReader rdr = provider.GetReader(new QueryCommand(sql))) {
while (rdr.Read()) {
string enumMemberName = CleanUp(rdr[DescriptionCol].ToString());
if (enumValList.Contains(enumMemberName)) {
int uniqueVal = 0;
string tempMemberName = enumMemberName;
while (enumValList.Contains(tempMemberName)) {
tempMemberName = enumMemberName + (++uniqueVal).ToString();
}
enumMemberName = tempMemberName;
}
string enumMemberValue = rdr[IdCol].ToString();
string enumKeyVal = (isMulti ? CleanUp(rdr[multiKeyCol].ToString()) : "");
if (rowCount != 0 && lastKeyVal != enumKeyVal) {
// we are doing a multi read, use the key val to generate an enum for each block of key values
string tempEnumName = GetEnumName(lastKeyVal, idColIsString);
SqlScript += GetEnumHeaderFooter(tbl.Name, tempEnumName, IdCol, DescriptionCol, enumMemberScript, idColIsString, IsVb);
enumMemberScript = "";
//.........这里部分代码省略.........